Question

Speed=3km/h, distance=12km what change should be done in the speed to take(1)an hour less and (2)an hour more to cover the distance

Answer 1

Inverse variation

Speed. Time

3kmph. 4(it takes 4 hrs to

cover 12 km in that

speed

X. 3

3x=12

X=4kmph

After doing same for an hour more and taking time as 5hrs we get

5x=12

x=12/5=2.4kmph