Help please

Question

According to a study, each week the average elementary child spends 17 hours watching television, 2 hours reading books, and 10 hours playing outside. What is the ratio of number of hours of television watched to the number of hours reading? 

Answer 1

Ratios are expressed by inserting a colon, ":", between the two numbers being compared. The ratio of hours of television watched to hours reading would simply be expressed as 17:2. This relationship cannot be reduced to a simpler form, since 17 and 2 do not share any common factors.