Question

A taxi going at 90 km/hr takes 35 minutes to travel a certain distance. by how much should it increase its speed (in km/hr) to travel the same distance in 21 minutes

Answer 1

I think it would be 60km increase.
speed is 90km /h
time is 35min
distance would be 35×90=3150km

NOW,
distance is 3150 km
time is 21min
speed would be 3150/21=150km /h
Increase in speed= 150-90=60km/h

Answer 2

Answer:

I think it would be 60km increase.

speed is 90km /h

time is 35min

distance would be 35×90=3150km

NOW,

distance is 3150 km

time is 21min

speed would be 3150/21=150km /h

Increase in speed= 150-90=60km/h