Question

A scooter covers a certain distance in 4.5 hrs moving at a speed of 60 km/hr. How much should it increase its speed to cover the same distance in 4 hrs

Answer 1

Answer:

First of all we have to find the distance, as:-

s = 60km/hr. t = 4.5 hrs.

s = d/t

60 = d/4.5

d = 60×4.5

d = 270km.

now find the speed to cover same distance in 4 hrs.

s = d/t

s = 270/4

s = 67.5 km/hrs

now speed he has to increase will be

67.5 - 60 = 7.5 km/ hrs

he has to inc. the speed by 7.5 km/hrs to cover the same distance.

Answer 2

4+54+5+5+5+5+5+5+5+5+5+4