Question
Rafique had to cover 540 km in 24 hours. He covered the
first 350 km at an average speed of 25 km/h. What should be Rafique's average speed for the rest of the journey so that he reaches on time?Solution
Time taken to cover first 350 km at an average speed of 25 km/h = 350/25 = 14 hrs Now, we have remaining time = (24 - 14) hrs = 10 hrs Remaining distance = (540 - 350) km = 190 km Rafique's average speed for the rest of the journey = 190/10 = 19 km/hr
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