A car covers 25 km at a uniform speed. If the speed had been 8 km, h more, it would have taken 10 hours less for the same journey. What is the speed of the car (in km, h)?
- 2.5 km hr
- 2 km hr
- 4km hr
- 3 km hr
Explanation
A car covers 25 km at a uniform speed. If the speed had been 8 km/h more, it would have taken 10 hours less for the same journey. What is the speed of the car (in km/h)?
Here distance ‘d’ = 25 km, time = t, speed = s
Then we have from the relation speed =
And it is given that if the distance = 25, s = s + 8, t = t – 10
Hence the speed is 2 km/hr.
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