Nick had some apple macarons and chocolate chip macarons. He gave away 60 macarons to his brother. 30% of them were apple macarons and the rest were chocolate chip macarons.

1. How many chocolate chip macarons did he give his brother?
2. Nick gave some apple macarons to his sister. ²₅ of all the macarons he gave away to his brother and his sister were apple macarons. How many apple macarons did he give his sister?

(a)
Percentage of chocolate chip macarons
= 100% - 30%
= 70%

Number of chocolate chip macarons that Nick gave to his brother
= 70% x 60
= ⁷⁰₁₀₀ x 60
= 42 

(b)
Fraction of all the macarons he gave away to his brother and his sister that were chocolate chip macarons
= 1 - ²₅
= ³₅

3 u = 42

1 u = 42 ÷ 3 = 14

Number of apple macarons that Nick gave to his brother and his sister
= 2 u
= 2 x 14
= 28

Number of apple macarons that Nick gave to his brother
= 60 - 42
= 18

Number of apple macarons that Nick gave to his sister
= 28 - 18
= 10

Answer(s): (a) 42; (b) 10