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.

380 mph

340 mph

320 mph

300 mph

Answer 1

Let x=Speed of plane in still air
y=Speed of head wind
y=60
3(x-60)=2(x+60)
3x-180=2x+120
x=120+180
x=300

Answer 2

thank you