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NIVETHA R

· started a discussion

· 1 Months ago

boar and stream (Question:340110.0)

i cant able to understand the solution

Question:
A river is flowing with a steady speed of 4 km/h. One rows his boat downstream in the river and then returns by rowing upstream in the same river. When he returns to the starting point, the total distance covered by him is 42 km. If the return journey takes 2 h more than his outward journey, then what is the speed of his rowing in still water?
Options:
A) 10 kmph
B) 12 kmph
C) 14 kmph
D) 16 kmph
E) None of these
Solution:

Ans.(a)



karunakaran

· commented

· 1 Months ago

3/2 because one and half more

karunakaran

· commented

· 1 Months ago

24/(x+4) - 24/(x-4)=3/2
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