Question

Samantha can ride her bicycle 4 miles in 20 minutes. At this same speed, how far can she ride her bike in an hour and a half?

Answer 1

18 miles

Explanation:

if Samantha can ride her bicycle 4 miles in 20 minutes, that means every 5 minutes she rides for a mile.

20 / 4 = 5

Using that info, we can solve this.

1 hr & 30 min = 90 min

90 / 5 = 18 miles

Answer 2

18

Explanation:

4 miles in 20 mins = 1/5 mile in 1 min

1 1/2 hours = 90 mins

1/5*90=18