A car covers 4 successive 3km stretches at speed of 10kmph, 20kmph, 30 – McqOptions

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1.	A car covers 4 successive 3km stretches at speed of 10kmph, 20kmph, 30kmph & 60kmph resp. Its average speed is
A.	20 km/h
B.	25 km/h
C.	30 km/h
D.	35 km/h
Answer» B. 25 km/h

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