Seth had some cranberry scones and apricot scones. He gave away 80 scones to his brother. 10% of them were cranberry scones and the rest were apricot scones.

1. How many apricot scones did he give his brother?
2. Seth gave some cranberry scones to his sister. ³₅ of all the scones he gave away to his brother and his sister were cranberry scones. How many cranberry scones did he give his sister?

(a)
Percentage of apricot scones
= 100% - 10%
= 90%

Number of apricot scones that Seth gave to his brother
= 90% x 80
= ⁹⁰₁₀₀ x 80
= 72 

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

2 u = 72

1 u = 72 ÷ 2 = 36

Number of cranberry scones that Seth gave to his brother and his sister
= 3 u
= 3 x 36
= 108

Number of cranberry scones that Seth gave to his brother
= 80 - 72
= 8

Number of cranberry scones that Seth gave to his sister
= 108 - 8
= 100

Answer(s): (a) 72; (b) 100