Question

An airplane flew 3 hours with a 60 mph head wind. The return trip with a tail wind of the same speed took 2 hours. Find the speed of the plane in still air.

A. 380 mph

B. 340 mph

C. 320 mph

D. 300 mph

Answer 1

head wind, REDUCES the planes speed, so:
rate 1 = (x-60) mph ; time = 3hrs
rate 2 = (x+60) mph ; time = 2hrs
the distances are the same and distance is rate *time ,hence:
(x-60) * 3 = (x+60) * 2
can you proceed from here?

Answer 2

x=300

Answer 3

right