Question

Excluding stoppages the speed of bus is 54 kmph and including stoppages it is 45 kmph.for how many minutes does the bus stop per hour

Answer 1

let bus travel for lcm(54,45)=270
excluding stoppage time taken 5 hrs
including stoppages time taken 6 hrs
so it stops for 1 hr
so bus will stop for 10minutes per hr