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Question 57
A bus covers first 200 km ofa journey in 4 hours and the next 600 km in 6 hours. What is the average speed of the bus for the whole journey?
Solution
Average speed =Â $$\frac{total distance}{total time taken}$$
Total distance = 800 km
Total time = 10 hours
 Average speed = $$\frac{800}{10}$$
 80 km/h
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