an airplane took 2 hours to fly 600 km against a head wind. the return trip with the wind took 1 2/3 hours. find the speed of the plane in still air.

• 330 kmph
  If speed(in kmph) of the plane in still air=x & of wind=y
  Time taken against head wind=600/(x-y)=2 , x-y=300 ---(i) &
  Time taken in return trip with the wind=600/(x+y)=5/3 , x+y=360 ---(ii)
  On solving (i) & (ii), x=330, y=30
• 9 years agoHelpfull: Yes(0) No(0)