Question

Riley has 40 novels so far in his book collection. 9/10 of these novels is fiction. Of these fictional novels, 1/3 of them were written by Michael Crichton. How many Michael Crichton novels does Riley have in his book collection

Answer 1

Explanation:

Answer 2

12

Explanation:

Number of novels in the book collection of Riley = 40

Ratio of fictional novels in the book collection =
`(9)/(10)`

Number of fictional novels = Ratio of fictional novels in the book collection × Number of novels in the book collection of Riley =
`(9)/(10)* 40=36`

Ratio of fictional novels written by Michael Crichton =
`(1)/(3)`

Number of fictional novels written by Michael Crichton = Ratio of fictional novels written by Michael Crichton × Number of novels in the book collection of Riley =
`(1)/(3)* 36=12`

Therefore, number of novels that Riley has in the book collection of Michael Crichton = 12