A bus takes 12 hours to travel the same distance that an airplane travels in 1.5 hours. The average speed of the airplane is 120 km/hour faster than five times the average speed of the bus. What is the average speed of the bus?
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Let's say the distance covered is xkm.
Speed = Distance/Time
Speed of bus = x/12
Speed of plane = x/1.5
A.T.Q. x/1.5 = 5x/12 +120
On solving x = 480
And speed of bus = x/12= 480/12= 40km/hr
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