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# Multiplying fractions word problem: movies

Sal solves a multiplication fraction word problem about movies. Created by Sal Khan.

## Want to join the conversation?

• That's because 5 is a factor of 20. Waffles the great.
• The blue fill up bar on the video play sign isn't filling up! Please fix this problem.
• There is a bug. A lot of people have been having this issue for months.
• yeah I got confused by what he said that 13/4 is the same thing as 1x3/4! And now he saying that!
• Can somebody help me with this problem?

Joe has a recipe that requires 3 and 1/2 cups of flour. He wants to reduce the recipe by 1/2 cup. How many cups of flour are needed for the smaller recipe?
• 21/4 beacuse he add all of them i am not sure plz help thanks
• Erin uses 2/8 yards of string to make 1 bracelet. Erin will make 6 bracelets. How many yards of string will Erin use to make 6 bracelets?
• What about cross simplifying. Would that mix things up.... im very, VERY bad with fractions.....
(1 vote)
• no it would not. it will make things easier like 6/8 times 8/12. you would get 1/1 times 1/2 equals 1/2. other than just do ahead and multiply 6/8 by 8/12 and get 48/96 and having to simplify 48/96 into 1/2.
• story problem for 2/3 * 3/4 =?
• A ribbon is ²/₃ feet long. If you want ¾ of a ribbon, how long would that be in feet?
• so, if you multiply a fraction with a whole number, you put the whole number over 1?
(1 vote)
• Yes. Then you would multiply the numerators together and the denominators together.
6*(1/2)=(6/1)*(1/2)=(6*1)/(1*2)=6/2=3
Any number can be multiplied or divided by one.
Dividing just means putting it in groups.
3 donuts given to 1 person equals 3