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With the wind, an airplane travels 1120 miles in seven hours. Against the wind, it takes eight hours. Find the rate of the plane in still air and the velocity of the wind.

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9 years agoHelpfull: Yes(1) No(0)

ans 150 miles/hr
sorry
9 years agoHelpfull: Yes(0) No(0)
1120 miles in seven hrs that means up speed is 1120/7=160.
for against the wind 1120 miles in 8 hrs so down speed 1120/8=140.
now plain speed in still air=1/2(160+140)=150 kmph
wind speed=1/2(160-140)=10 kmph
9 years agoHelpfull: Yes(0) No(0)

GENPACT Other Question

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