Question

Tommy can ride his bicycle 4.5 miles in 15 minutes how many miles can he ride in 75 minutes

Answer 1

4.5 miles * 5 = 22.5 miles

Answer 2

How many miles can he ride in 75 minutes?

15 / 75 = 4.5 / x
1 / 5 = 4.5 / x
1 / 5 * x = 4.5 / x * x
1 / 5 * x = 4.5
1 / 5 * x 5 = 4.5 * 5
1x = 22.5
x = 22.5 miles