Answers

2014-12-06T15:26:27+05:30
Let speed of boat be X kmph.
down stream- in 96 minute boat will travel 96/60(X+1)km
upstream -in  120 min boat will travel  120/60(X-1)km
As per question 96/60(X+1)=120/60(X-1)
                    ⇒96 X+96=120X-120
                    ⇒ 24X= 216
                            X=9
Speed of boat 9 kmph
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2014-12-07T14:20:18+05:30
It is nine because 96-120is 24 and iy divides by 4

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