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10 May, 09:12

Ms. Ermas oatmeal recipe calls for 2/5 of a cup of raisins. How many batches of cookies can she make if she has 4/5 cup of raisins

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  1. 10 May, 12:53
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    Okay. Ms. Erma has an oatmeal recipe calling for 2/5 cup of raisins and she has 4/5 cups of raisins right now. To find the batches of cookies she can make, we can divide fractions. In order to divide fractions, keep the first fraction the same, change division into multiplication, and flip the second fraction over. In this case, 4/5 is our dividend, so we keep that the same. Division becomes multiplication. 2/5 gets flipped over into 5/2, because that's our divisor. The expression is like this:

    4/5 * 5/2

    Now, multiply straight across. 4 * 5 is 20. 5 * 2 is 10. 20/10 is 2 when simplified, There. Ms. Erma can make 2 batches of cookies with 4/5 cup of raisins.
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