A car runs at the speed of 40 when not serviced and runs at 65 kmph when serviced. After servicing the car covers a certain distance in 5 hours. How much approximate time will the car take to cover the same distance when not serviced ?
After servicing, the distance covered by car in 5 hours = 65 * 5 = 325 km
Without servicing, speed of car = 40 kmph
=> Required time = $$\frac{Distance}{Speed}$$
= $$\frac{325}{40}$$ = 8.125 hr
$$\approx$$ 8 hours
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