Question

1) If the ratio to boys to girls in a class is 4:9, what is the ratio of girls to all students in the class?

2) On a map of the Thunderbird Country Club golf course, 0.5 inches represent 15 yards. How long is the 4th hole if the map shows 5.5 inches?

Answer 1

1) 9:13

2) 165 yards

Explanation:

1) If the ratio of boys to girls is 4:9, then the total is 13, so the ratio of girls to total is 9:13

2) Write a proportion

`(.5)/(15)` =
`(5.5)/(y)` Cross multiply

.5y = 15(5.5)

.5y = 82.5 Divide both sides by .5

y = 165