Answer:
45 per 10
Step-by-step explanation:
This is a fraction equal to
4 5 ÷ 1 10
We want a unit rate where
1 is in the denominator,
so we divide top and bottom by 1
4 5 ÷ 1
1 10 ÷ 1
=
4 5
1 10
10
= 4 5 per 10
20 mph
