A car driver leaves Bangalore at 8.30 A.M. and expects to

A car driver leaves Bangalore at 8.30 A.M. and expects to reach a place 300 km from Bangalore at 12.30 P.M. At 10.30 he finds that he has covered only 40% of the distance. By how much he has to increase the speed of the car in order to keep up his schedule?

Distance covered by car in 2 hours

=	300 × 40	= 120 km
	100

Remaining distance = 300 – 120 = 180 km
Remaining time = 4 – 2 = 2 hours

∴ Required speed =	180	= 90 kmph
	2

Original speed of car =	120	= 60 kmph
	2

∴ Required increase in speed
= 90 – 60 = 30 kmph