A motor car covers a certain distance in 50 minutes, when running with uniform speed of
54 km/hr. How much time will it take to cover the same distance, when its speed is
decreased to 30 km/hr?
Answers
Answered by
7
Given,
Time taken to cover the distance = 50 mins = 50 * 60 = 3000 sec
Travelling speed = 45 km/h = 45 * 5/18 = 12.5 m/s
Imaginary speed = 30 km/h = 30 * 5/18 = 8.3 m/s
Let the distance be x.
We know,
Speed = Distance/Time
By substituting values,
∴ 12.5 = x / 3000
⇒ 125/10 * 3000 = x
⇒ x = 125 * 300
⇒ x = 37500 m = 37.5 km
The time taken to cover 37.5 km at 30 km/h
Time= Distance/Speed
⇒ Time = 37.5/30 = 1 .25 hr
Therefore it covers the same distance in 1.25 hours at the speed of 30 km/hr.
mark me as a brainalist
Answered by
0
Answer:
hibk df dark red ex buidhyrkhheruhtg
jvchrkc
Step-by-step explanation:
cgjgncncgzvncykh
Similar questions