Andrew M. answered • 03/27/18

Tutor

New to Wyzant
Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors

One way is to find the miles per hour rate and use that to determine the final answer:

miles per hour... mph = 78/1.5 = 52 mph

Driving at 52 mph for 2.5 hours: 52(2.5) =

**130 miles**************************************

One could also use a proportion:

78 is to 1.5 as x is to 2.5

78/1.5 = x/2.5

cross multiply

1.5x = 78(2.5)

x = 78(2.5)/1.5

**x = 130 miles**