One-fourth of certain journey is covered at the rate of 25 km/h, one-t – McqOptions

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1.	One-fourth of certain journey is covered at the rate of 25 km/h, one-third at the rate of 30 km/h and the rest at 50 km/h. Find the average speed for the whole journey.
A.	600/53km/h
B.	1200/53 km/h
C.	1800/53 km/h
D.	1600/53 km/h
E.	None of these
Answer» D. 1600/53 km/h

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