If a boat goes upstream at a speed of 21 km/h and comes back the same – McqOptions

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1.	If a boat goes upstream at a speed of 21 km/h and comes back the same distance at 28 km/h. What is the average speed (in km/hr) for the total journey?
A.	24.5
B.	24
C.	25
D.	25.4
Answer» C. 25

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