A boy covers a distance of 2.5 km in 15 minutes and the next 3 km in 18 minutes. What is the average speed of the boy?
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Speed = Distance/Time
2.5 km + 3 km = 5.5 km
5.5 km = 550 m
15 min + 18 min = 33 min
33 min = 1980 sec
Speed = 550 / 1980
Speed = 275 m/ 99s
( 2.77 m/s )
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