A plane travels a particular distance in 5 hours at a speed of 240 kilometres per hour. It must drive at the following pace to reach the same distance in 1 hour:
A. 300 kmph
B. 360 kmph
C. 600 kmph
D. 720 kmph
Answer:D
A plane travels a particular distance in 5 hours at a speed of 240 kilometres per hour. It must drive at the following pace to reach the same distance in 1 hour:
A. 300 kmph B. 360 kmph C. 600 kmph D. 720 kmph
Explanation: 1200 kilometres = (240 x 5)Distance/Time = Speed,1200/(5/3) km/hr is the speed. [1 hour can be written as 5/3 hours],1200 x 3/5 km/hr = 720 km/hr is the required speed.