Question

A car covers a distance of `2 km` in `2.5` minutes. If it covers half of the distance with speed `40km//hr`, the rest distance it shall cover with a speed of `:`
A. `56km//hr`
B. `60km//hr`
C. `48km//hr`
D. `50km//hr`

Answer 1

Correct Answer - B
Time taken by car to cover first half distance.
`=(1)/(40)hr=(1)/(40)xx60mi n=1.5mi n.`
Remaining time `=2.5=1.5=1mi n`.
required speed `=(1km)/(1m i n)=60km//hr`