How to solve Iift 2008 Question 45?

This question can be solved by applying the core concept explained in the solution above, followed by step-by-step calculation and elimination of options.

Which concept is tested in this question?

This question tests fundamental concepts commonly asked in IIFT exams.

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Iift 2008 Question 45

This is a detailed step-by-step solution for Iift 2008 Question 45. Understand the concept, common mistakes, and expert tips to solve similar questions in IIFT exam.

IIFT 2008

Explanation:

Let us assume the upstream speed of the boat = u and the downstream speed = v

30/u+44/v=10

40/u+55/v=13

Consider 1/u=a, 1/v=b, these equations become

30a+44b=10

40a+55b=13

We get a=1/5 and b=1/11 Hence, 1/u=1/5 and 1/v =1/11 => u=5 and v=11

Assuming speed of boat in still water is x and the speed of stream=y

u=x-y=5

v=x+y=11

From these equations, we get x=8 km/hr

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