Jacqueline spends 20% of her money on sweets and 32% on fares. if she spent $8 on sweets what is. (1) the amount of money she has left (2) The amount of money spent on fares (3) The amount she has left. I need help with this problem I am working on finding percentages using the unitary method on a calculator. But no matter what I do, I can't figure out the answers to this problem. what am I doing wrong?

Set up a proportion using the information for sweets: 8/n = 20/100 Cross multiply: 20n = 800 Divide by 20: n = $40 This means Jacqueline started with $40 You can find the amount spent on fares by doing: x/40 = 32/100 Cross multiply: 100x = 1280 Divide by 100: x = $12.80 So, she spent $12.80 on fares To find amount left, do: 40 - 8 - 12.80 Hope this helps.

I am still confused on ratios and units? what should i do?

HI! this lesson might get confused but here is a brief explanation. A unit rate is a ratio between two different units with a denominator of one. When we divide a fraction's numerator by its denominator, the result is a value in decimal form. For example: 8/4 = 2 and 3/6 = 0.5. When we write numbers in decimal form, we can write them as a ratio with one as the denominator. For example, we can write 2 as 2/1, and 0.5 as 0.5/1. However, since that approach can be a little clumsy, we usually drop the one. That said, it's important to remember the one is there, especially when working with unit rates. For instance, 8 miles/4 hours = 2 miles/hour. Notice again that, while we did not include the 1, we did include the unit 'hour' Miles per hour is a familiar expression, as are unit rates such as: interest/amount invested revolutions/minute salary/year Hope this helps!

Reduce the following rates to their unit rate forms. Write the numerator of each unit rate in the box provided. $40 per 8 Hours

You need to find dollars per hour. Divide: 40/8 to find you answer.

Sir you need to tell us how to do it if it was in a different circumstance not every problem will be this convienient

All unit rates problems use division. And, the problem tells you what unit rate they are looking for. Find the description of the unit rate given in the problem. For example, if it asks for: Unit price, you do Price / units and divide. Miles per hour, you do Miles / hours and divide. Wages per hour, you do total wages / hours and divide. Hope this helps.

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MAP Recommended Practice

Course: MAP Recommended Practice > Unit 17

Lesson 5: Intro to rates

Solving unit price problem

Name: Solving unit price problem
Uploaded: 2011-02-20T16:39:43Z
Description: Nierria earns $75 for tutoring 4 hours. To find her hourly rate, we divide her total earnings by the number of hours worked. By calculating 75 divided by 4, we discover that Nierria makes $18.75 per hour for her tutoring services.

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Nierria earns $75 for tutoring 4 hours. To find her hourly rate, we divide her total earnings by the number of hours worked. By calculating 75 divided by 4, we discover that Nierria makes $18.75 per hour for her tutoring services. Created by Sal Khan and Monterey Institute for Technology and Education.

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Tatiana Fabila
Posted 11 years ago. Direct link to Tatiana Fabila's post “how can i express 1 mile ...”
how can i express 1 mile in 4 min???
Button navigates to signup pageComment on Tatiana Fabila's post “how can i express 1 mile ...”
(7 votes)
Answer
- CarlBiologist
  Posted 11 years ago. Direct link to CarlBiologist's post “0.25 miles per minute”
  0.25 miles per minute
  Comment on CarlBiologist's post “0.25 miles per minute”
  (137 votes)
242559
Posted 3 years ago. Direct link to 242559's post “I am still confused on ra...”
I am still confused on ratios and units? what should i do?
Button navigates to signup pageComment on 242559's post “I am still confused on ra...”
(5 votes)
Answer
- southside joji
  Posted 3 years ago. Direct link to southside joji's post “HI! this lesson might get...”
  HI! this lesson might get confused but here is a brief explanation.
  A unit rate is a ratio between two different units with a denominator of one. When we divide a fraction's numerator by its denominator, the result is a value in decimal form. For example: 8/4 = 2 and 3/6 = 0.5. When we write numbers in decimal form, we can write them as a ratio with one as the denominator.
  
  For example, we can write 2 as 2/1, and 0.5 as 0.5/1. However, since that approach can be a little clumsy, we usually drop the one. That said, it's important to remember the one is there, especially when working with unit rates.
  
  For instance, 8 miles/4 hours = 2 miles/hour. Notice again that, while we did not include the 1, we did include the unit 'hour' Miles per hour is a familiar expression, as are unit rates such as:
  
  interest/amount invested
  revolutions/minute
  salary/year
  Hope this helps!
  Comment on southside joji's post “HI! this lesson might get...”
  (22 votes)
Ritika
Posted 12 years ago. Direct link to Ritika's post “Is there any video that e...”
Is there any video that explains and defines what Rates are? If not, can someone help me and define it?
Button navigates to signup pageComment on Ritika's post “Is there any video that e...”
(3 votes)
Answer
- sporambo
  Posted 12 years ago. Direct link to sporambo's post “A rate is like a ratio.”
  A rate is like a ratio.
  Comment on sporambo's post “A rate is like a ratio.”
  (18 votes)
slimeboy563
Posted 5 years ago. Direct link to slimeboy563's post “Jacqueline spends 20% of ...”
Jacqueline spends 20% of her money on sweets and 32% on fares. if she spent $8 on sweets what is. (1) the amount of money she has left (2) The amount of money spent on fares (3) The amount she has left. I need help with this problem I am working on finding percentages using the unitary method on a calculator. But no matter what I do, I can't figure out the answers to this problem. what am I doing wrong?
Button navigates to signup pageButton navigates to signup page
(6 votes)
Answer
- Kim Seidel
  Posted 5 years ago. Direct link to Kim Seidel's post “Set up a proportion using...”
  Set up a proportion using the information for sweets: 8/n = 20/100
  Cross multiply: 20n = 800
  Divide by 20: n = $40
  This means Jacqueline started with $40
  
  You can find the amount spent on fares by doing: x/40 = 32/100
  Cross multiply: 100x = 1280
  Divide by 100: x = $12.80
  So, she spent $12.80 on fares
  
  To find amount left, do: 40 - 8 - 12.80
  
  Hope this helps.
  Comment on Kim Seidel's post “Set up a proportion using...”
  (11 votes)
Isabella
Posted 2 years ago. Direct link to Isabella's post “Thank you for the help! Y...”
Thank you for the help! You are so kind.
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(7 votes)
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jmjung
Posted 3 years ago. Direct link to jmjung's post “who else used a calculato...”
who else used a calculator for this?
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(8 votes)
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- War Stopper
  Posted 9 months ago. Direct link to War Stopper's post “me. lol”
  me. lol
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  (1 vote)
lbeckman
Posted 6 years ago. Direct link to lbeckman's post “Reduce the following rate...”
Reduce the following rates to their unit rate forms. Write the numerator of each unit rate in the box provided.
$40 per 8 Hours
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(4 votes)
Answer
- Kim Seidel
  Posted 6 years ago. Direct link to Kim Seidel's post “You need to find dollars ...”
  You need to find dollars per hour.
  Divide: 40/8 to find you answer.
  Comment on Kim Seidel's post “You need to find dollars ...”
  (7 votes)
🌟Cambriel🌟
Posted 10 months ago. Direct link to 🌟Cambriel🌟's post “This is boring but helpfu...”
This is boring but helpful I think🥲
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(6 votes)
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- msjea31
  Posted 5 months ago. Direct link to msjea31's post “True”
  True
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  (0 votes)
Will
Posted 5 years ago. Direct link to Will's post “At 1:58, the company shou...”
At
1:58
, the company should charge for area not number of offices because it could be huge and another one is small and both are then same price.
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(6 votes)
Answer
- War Stopper
  Posted 9 months ago. Direct link to War Stopper's post “Yes, but it is a fictiona...”
  Yes, but it is a fictional company for one's education, not a real situation.
  Comment on War Stopper's post “Yes, but it is a fictiona...”
  (0 votes)
AnMeTseng
Posted 6 months ago. Direct link to AnMeTseng's post “Sir you need to tell us h...”
Sir you need to tell us how to do it if it was in a different circumstance not every problem will be this convienient
Button navigates to signup pageComment on AnMeTseng's post “Sir you need to tell us h...”
(2 votes)
Answer
- Kim Seidel
  Posted 6 months ago. Direct link to Kim Seidel's post “All unit rates problems u...”
  All unit rates problems use division. And, the problem tells you what unit rate they are looking for. Find the description of the unit rate given in the problem. For example, if it asks for:
  Unit price, you do Price / units and divide.
  Miles per hour, you do Miles / hours and divide.
  Wages per hour, you do total wages / hours and divide.
  
  Hope this helps.
  Comment on Kim Seidel's post “All unit rates problems u...”
  (5 votes)

Video transcript

- [Instructor] We're told that Nierria earns $75 for 4 hours of tutoring. How much does Nierria earn for 1 hour of tutoring? Pause this video, and see if you can figure that out. Well, the key here is $75 for 4 hours of tutoring. And there's a couple of ways you can think about it. The ratio here is $75 for every 4 hours. So if you wanted one hour of tutoring, well, it's just going to be 1/4 of the $75, or you could just take 75 and divide by 4. Another way you could think about it, you could say Nierria gets $75 for every 4 hours, which is another way of saying that Nierria is going to earn 75 divided by 4 dollars per hour. So really we just have to figure out what 75 divided by 4 is. So let's do a little bit of long division. So 4 goes into 7 one time, 1 times 4 is 4. We're going to subtract. 7 minus 4 is 3. Bring down that 5. 4 goes into 35 eight times. 8 times 4 is 32. I will subtract again. I get a 3. Well now I'm going to get some decimals here, so let me bring down a zero. 4 goes into 30 seven times. 7 times 4 is 28. Subtract, and then I get a 2. Bring down another zero. 4 goes into 20 five times. 5 times 4 is 20, and I am done, no more remainder here. So we get that Nierria earns 18.75 dollars, dollars per hour, or you can just say that she makes $18.75 per hour.