A car can travels 450 kms in 4 hours. If the speed is decreased by 15 1/2 kmph, how much time does t

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07 Aug 2019 Distance Traveled

A car can travels 450 kms in 4 hours. If the speed is decreased by 15 1/2 kmph, how much time does the car take to cover a distance of 873 km?

OPtion

1) 450 minutes
2) 490 minutes
3) 520 minutes
4) 550 minutes
5) 570 minutes
6) 34200 seconds
7) 32400 seconds
8) 32408 seconds
9) 32480 seconds
10) None of these

Solution

Speed = 450/4 = 112 1/2 kmph
Speed is reduced by 12 1/2 so new speed 112 1/2 - 12 1/2 = 97 kmph
time = 873/97 = 9 hrs = 32400 seconds

Correct Option: 7 Best Solution (5)