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Q:
A) 27 km/h | B) 29 km/h |
C) 31 km/h | D) Cannot be determined |
Answer:
Explanation:
Explanation:
Ans. Suppose the speed of boat in still water is x km/h and speed of stream is y km/h
Speedof boat in downstream = (x + y) km/h x+ y = 32 …(i)
Speed of boat in upstream = (x – y) km/h
x – y = 28 …(ii)
Add. Eqs. (i) and (ii), we get 2x = 60
x = 30 km/h