Question

A motor boat takes 12 hours to go downstream and it takes 24 hours to return the same distance. what is the time taken by boat in still water?

A) 15 h B) 16 h C) 8 h D) 20 h

Answer 1

Answer:

16 h

Step-by-step explanation:

If t1 and t2 are the upstream and down stream times. Then time taken in still water is given by

2×t1×t2t1+t2=2×12×2436=16h