A car covers a distance of 20 km in 15 minutes. if its speed is decreased by 10 km/hr, then what will be the time (in minutes) taken by it to cover the same distance?
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Answered by
0
so according to given data speed of car is=20000÷15×60
speed=22.22m/s.
if speed decreased by 10km/hr=2.77m/s
then it's speed became 19.45 m/s
now time=distance/speed
time=20000/19.45=1028 seconds
which is as same as 17 minutes
so 17 minutes is answer
speed=22.22m/s.
if speed decreased by 10km/hr=2.77m/s
then it's speed became 19.45 m/s
now time=distance/speed
time=20000/19.45=1028 seconds
which is as same as 17 minutes
so 17 minutes is answer
Answered by
1
the speed of a car =80km/hr
the speed decrease by 10km/hr = 80km/hr - 10km/hr
= 70km/hr
time taken by a car = 17.14 min
the speed decrease by 10km/hr = 80km/hr - 10km/hr
= 70km/hr
time taken by a car = 17.14 min
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