How much time will take bike ?

A bike runs at the speed of 50 km/hr when not serviced and runs at 60 km/hr when serviced. After servicing  the bike covers a certain distance in 6 hours. How much time will the bike take to cover the same distance when not serviced?

  1. 8.2 hours
  2. 6.5 hours
  3. 7.2 hours
  4. None of these
Anurag Mishra Professor Asked on 20th December 2015 in Maths.
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1 Answer(s)

Answer: (3) 7.2 hours 

The speed of bike when not serviced = 50 km/hr
The speed of bike when serviced = 60 km/hr

Time taken by serviced bike = 6 hours
Then total distance covered by serviced bike = 6 x 60
= 360 km

So, time taken by bike when not serviced = 360/50
= 7.2 hours

Hence, the correct answer is option (3) 7.2 hours.

Anurag Mishra Professor Answered on 20th December 2015.
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