Which speed is the fastest ? A)18 feet in 20 minutes B)90 feet in 2.5 hours C)20 yards in 1.5 hours D)3 2/3 yards in 15 minutes
2 Answers
D. 1 :1 ratio.
Explanation:
A is a ratio of .9:1 18/20 = 9/10 = .1
B. is a ratio of .4/1
C. is a ratio of .66/1 =
D. is a ratio of 1/1
So D is the fastest.
Explanation:
.
In order to compare, we need to convert all four speeds to a common unit. Let's convert them all to feet per hour:
There are
We divide
Therefore,