Here's the question you clicked on:
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You need 1 1/4 cups of sugar to make 20 cookies To make 8 cookies, you will need ? cups of sugar
how many cups of sugar is needed for 20 cookies?
what percent of 20 is 8?
hint: its the small values divided by the big value. Once you find that percent all you have to do is multiply it to the number of cups you originally used and the outcome will be the cups you need now.