Question

A bus starts running with the initial speed of 33 km/hr and its speed increases every hour by certain amount. If it takes 7 hours to cover a distance of 315 km, then what will be hourly increment (in km/hr) in the speed of the bus?

Answer 1

Average speed is 315/7= 45 km /h

Therefore , sum of the initial and final speed is 45 * 2 = 90 km/h

Final speed is 90 - 33 =57 km/h

Increment to final speed from initial speed in 7 hours is 57 -33 = 24 km/h

hourly increment is =( 24/7 ) km / h ^ 2