Ethan had some strawberry scones and cheese scones. He gave away 70 scones to his sister. 20% of them were strawberry scones and the rest were cheese scones.

1. How many cheese scones did he give his sister?
2. Ethan gave some strawberry scones to his brother. ⁵₇ of all the scones he gave away to his sister and his brother were strawberry scones. How many strawberry scones did he give his brother?

(a)
Percentage of cheese scones
= 100% - 20%
= 80%

Number of cheese scones that Ethan gave to his sister
= 80% x 70
= ⁸⁰₁₀₀ x 70
= 56 

(b)
Fraction of all the scones he gave away to his sister and his brother that were cheese scones
= 1 - ⁵₇
= ²₇

2 u = 56

1 u = 56 ÷ 2 = 28

Number of strawberry scones that Ethan gave to his sister and his brother
= 5 u
= 5 x 28
= 140

Number of strawberry scones that Ethan gave to his sister
= 70 - 56
= 14

Number of strawberry scones that Ethan gave to his brother
= 140 - 14
= 126

Answer(s): (a) 56; (b) 126