Question 594557
Let the distance the plane traveled be x miles

speed of plane = 150 mph
forward speed against wind = 150-10 = 140 mph

Return speed with wind = 150+10 = 160 mph

Time forward + time return = 1.5 hours

x/140 + x/160 = 1.5 

multiply by LCD

160x+140x = 1.5 * 160*140

300x= 33600
x=112 miles