Question

Nolan reads his little sister one of her two favorite books each night before bed. This month, she has chosen the mermaid book 3 times for every 2 times she has chosen the princess book.


If Nolan has read his sister a book before bed 20 times this month, how many times has he read the mermaid book?

Answer 1

Nolan has read his sister the mermaid book 3 times out of every 5 times she picks a book. So, the mermaid book has been chosen 3 out of 5 times.

Out of 20 times Nolan has read his sister a book, he has read the mermaid book 3/5 x 20 = 12 times.

Therefore, Nolan has read the mermaid book 12 times this month.