Question

Simon makes 30 cakes

he gives 1/5 of the cakes to Sally
he gives 10% of the cakes to Jane
what fraction of the 30 cakes does he have left

Answer 1

7/10

Explanation:

30 x 1/5 = 6 cakes go to Sally

30 x 0.10 = 3 cakes go to Jane

30 - 6 - 3 = 21 cakes are left

21/30 = 7/10