Multiple Choice Questions

In one hr a boat goes 11 km along the stream and 5 km against the stream The speed of the boat in st...........

Math and Mental Ability Boats and Streams

In one hr a boat goes 11 km along the stream and 5 km against the stream. The speed of the boat in still water (in km/hr) is:

We know we can calculate it by 1/2(a+b)
= 1/2(11+5) = 1/2(16) = 8 km/hr

Hence, option 3 is the correct answer.

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