7.5 cups sugar will be used.
Step-by-step explanation:
Given,
Recipe calls 5 cups of sugar and 2 cups of brown sugar.
After enlarging 3 cups brown sugar is used.
To find the amount of sugar
Solution
2 cups enlarging into 3 cups
That means,
times it's increasing.
Hence, 5 cups of sugar is also increasing by
times
So, amount of sugar = 5×
=
= 7.5 cups