CBSE Class 10 Answered
plz...answer fast xam tomorrow
Asked by Sonal13 | 15 Jan, 2010, 02:43: PM
Expert Answer
Let the speed of river current be x km/h
speed upstream =1-x
speed downstream =1+x
12/1-x+12/1-x = 11/4
12(2/1-x2) = 11/4
Solving this we get x2 = -negative which is not possible so check the question and revert
Answered by | 15 Jan, 2010, 03:02: PM
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