Question

Frodo ran 2 4/5 in 7/12 of an hour. How many miles can Frodo run in one hour?

Answer 1

In 1 hour run:

4 4/5 miles

Explanation:

2 4/5 = 2 + 4/5 = 10/5 + 4/5 = (10+4)/5 = 14/5

Proportions:

14/5 miles ⇒ 7/12 hour

A miles ⇒ 1 hour

A = (14/5 miles)(1hour) / (7/12 hour)

A = (14/5)/(7/12)

A = (14*12) / (5*7)

A = 168 / 35

A = 140/35 + 28/35

A = 4 + 28/35

A = 4 + 4/5

A = 4 4/5 Miles