Answer-A truck driver has to cover a total distance of 260 km in 4 hours. He drives at a speed of 56 km/h f...

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Distance covered in the first 75 minutes  56  1.25  70km Time taken to complete the 90km stretch  90  60  1.5 hours Remaining distance  260 - 70 - 90  100km Remaining time  4 - 1.25 - 1.5  1.25 hours Hence, he must drive at  100  1.25  80 kmph

A truck driver has to cover a total distance of 260 km in 4 hours. He drives at a speed of 56 km/h for the first 75 minutes, and the next 90 km at speed of 60 km/h. At what speed (in km/h) must he drive the remaining distance in order to complete the journey in 4 hours?

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