Question

Distance between Delhi and Gwalior is 350 kilometre a bus travels the first 175 km at a speed of 60 km per hour how fast could the bus travel the next distance of 175 kilometre so as to cover the average speed of 80 kilometre per hour for the whole journey​

Answer 1

AVERAGE SPEED = TOTAL DISTANCE /TOTAL TIME

80 = 350/T

TIME=4.375 HRS

T1 =175/60

=2.916 HRS

T2=175/S

T2 =175/S

2.916+175/S=4.375

S -119.94

HENCE THE SPEED MUST BE 119.94(APPROX)

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