Question

a cookie recipe calls for 2 1/2 cups of sugar for every 2/5 cup of flour. if you made a batch of cookies using 1 cup of flour, how many cups of sugar would you need

Answer 1

25/4

Explanation:

2 1/2 is the same as 5/2 ....for simplicity.

hence:

5/2 cups of sugar - 2/5 flour

x cups of sugar - 1 flour

1 x 5/2 ÷ (2/5)

= 5/2 x 5/2

= 25/4