Rael had some chocolate chip biscuits and apple biscuits. He gave away 184 biscuits to his brother. 25% of them were chocolate chip biscuits and the rest were apple biscuits.

1. How many apple biscuits did he give his brother?
2. Rael gave some chocolate chip biscuits to his cousin. ⁴₇ of all the biscuits he gave away to his brother and his cousin were chocolate chip biscuits. How many chocolate chip biscuits did he give his cousin?

(a)
Percentage of apple biscuits
= 100% - 25%
= 75%

Number of apple biscuits that Rael gave to his brother
= 75% x 184
= ⁷⁵₁₀₀ x 184
= 138 

(b)
Fraction of all the biscuits he gave away to his brother and his cousin that were apple biscuits
= 1 - ⁴₇
= ³₇

3 u = 138

1 u = 138 ÷ 3 = 46

Number of chocolate chip biscuits that Rael gave to his brother and his cousin
= 4 u
= 4 x 46
= 184

Number of chocolate chip biscuits that Rael gave to his brother
= 184 - 138
= 46

Number of chocolate chip biscuits that Rael gave to his cousin
= 184 - 46
= 138

Answer(s): (a) 138; (b) 138