Question

A car takes 30 minutes less than a bus to travel 90 km between
Shamshabad to Yadadri. If the speed of car is 15 km/h more than
the speed of bus, then find the speed of both vehicles.
​

Answer 1

speed of bus = x km/h

speed of car = x +15 km/h

T1 for car = 90/x + 15

T2 for bus = 90 /x

according to the question T2 -T1 = 1/2 hour

so,

90/x -90/x+15 =1/2

you can further solve equation to get the value of x