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Rani has to travel from Mangalore to Kottayam but due to short of time , she managed to get the train ticket from Kozhikode to Kottayam only . she travelled by local transport from Mangalore to Kannur 120 km in 7 hours , Kannur to Kozhikode in bus 80 km in 5 hours , and Kozhikode to Kottayam by train to 240 km in 10 hours what is the average speed of Rani?

A20 km/hr

B25 km/hr

C8 m/s

D10 m/s

Answer:

A. 20 km/hr

Read Explanation:

average speed = total distance / total time taken Total distance = 120 + 80 + 240 = 440 total time taken = 7 + 5 + 10 = 22 hours average speed = 440/22 = 20 km/hr

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