Cody had some cherry muffins and chocolate chip muffins. He gave away 100 muffins to his sister. 25% of them were cherry muffins and the rest were chocolate chip muffins.

1. How many chocolate chip muffins did he give his sister?
2. Cody gave some cherry muffins to his cousin. ²₇ of all the muffins he gave away to his sister and his cousin were cherry muffins. How many cherry muffins did he give his cousin?

(a)
Percentage of chocolate chip muffins
= 100% - 25%
= 75%

Number of chocolate chip muffins that Cody gave to his sister
= 75% x 100
= ⁷⁵₁₀₀ x 100
= 75 

(b)
Fraction of all the muffins he gave away to his sister and his cousin that were chocolate chip muffins
= 1 - ²₇
= ⁵₇

5 u = 75

1 u = 75 ÷ 5 = 15

Number of cherry muffins that Cody gave to his sister and his cousin
= 2 u
= 2 x 15
= 30

Number of cherry muffins that Cody gave to his sister
= 100 - 75
= 25

Number of cherry muffins that Cody gave to his cousin
= 30 - 25
= 5

Answer(s): (a) 75; (b) 5