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# Linear equation word problems — Basic example

Watch Sal work through a basic Linear equations word problem.

## Want to join the conversation?

• At 2.45, I understood the answer but confused the difference between answer 2 and 4 why 4 is not correct answer as it is also the ​addition
• Let's break the problem down to clear up any confusion. The variable we will use to represent the number of classes Kaylee will take is c.
- Kaylee has 19 hours available each week to complete homework. With this information, we can start the equation: ... = 19
- Kaylee is planning on spending 2 1/2 hours doing homework for each class that she takes. This means that we have to multiply the number of classes that she will take: c by 2 1/2 to find the total number of hours she will spend doing homework total. The equation that we have now is: 2 1/2c + ... = 19
- Finally, we are told that Kaylee will spend an additional 6 1/2 hours total doing assigned readings, not 6 1/2 hours for each class. The final equation will be: 2 1/2c + 6 1/2 = 19.
Does that make sense? Option #4 is incorrect because it shows that Kaylee will do 6 1/2 hours of reading for each class, which is not the case. I hope this helped! :)
• Anybody else getting extreme stress about having to take the SAT in the far future?
• yep, im so scared even though im taking the spring dsat which is still 6 months away
• I did not understand why we are not multiplying c with 6 1/2
• This is because Kaylee will spend an additional 6 1/2 hours working on reading for all of her classes altogether, not for every individual class. Hopefully that clears up any confusion :)
• What easy way can I remember these problems?
• Try breaking it down piece by piece. to have an easy knowledge of the problem
• what's the best way to get better at word problems like this?
• understaning the meaning of each symbol or placment of the numbers , so in theory , actually UNDERSTANDING why things are placed in the way that they are will help later understand it in different contexts. For example y=mx+b ;the Y represents a total , m represent a slope and b is the y- int , when you understand the meaning of these values it's easier to understand it in different contexts ( word problems ) .
• Over all, this was a fairly easy problem.
• yes it was
(1 vote)
• How many questions will there be on the digital version of the SAT?