Question

Sue needs 1 1/4 cups of flour for a batch of cookies. How many batches can she make with 9 cups of flour?

Answer 1

She can make a maximumum of 7 batches of cookies

Answer 2

Hey there!

In order to find how many batches of cookies Sue can make with 9 cups of flour, all you need to do is divide 9 by 1 1/4. Not sure if you've gotten into decimals yet, but I would use those instead of fractions if you have.

Here's how you solve with fractions:


`(9)/(1) / 1 (1)/(4)`

Make this easier on yourself and turn your whole number into an improper fraction.


`(9)/(1) / (5)/(4)`

When you divide fractions, you will flip the second fraction (also called taking the reciprocal of the fraction). Then, you can multiply your fractions together instead.


`(9)/(1) * (4)/(5)`

Now, just multiply across and simplify.


`(36)/(5)`


`7 (1)/(5)`

Since you can't make a full batch with a fifth of the flour needed, Sue will be able to make 7 batches.

Hope this helped you out! :-)