Which of the ratios below has a unit rate of 12? Select all that apply.

Question

A) 20:8
B) 36:3
C) 120:10
D) 5:80
E) 96:8

Answer 1

The ratio 20:8 has a unit rate of 20/8 = 2.5, so it does not have a unit rate of 12.
The ratio 36:3 has a unit rate of 36/3 = 12, so it does have a unit rate of 12.
The ratio 120:10 has a unit rate of 120/10 = 12, so it does have a unit rate of 12.
The ratio 5:80 has a unit rate of 5/80 = 0.0625, so it does not have a unit rate of 12.
The ratio 96:8 has a unit rate of 96/8 = 12, so it does have a unit rate of 12.

Therefore, the ratios that have a unit rate of 12 are B), C), and E).