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Multiple Choice Questions

The different between downstream speed and upstream speed is 2 kmph and the total time taken during ...........

Quantitative Aptitude(IBPS RRB CL) Boats and Streams

The different between downstream speed and upstream speed is 2 kmph and the total time taken during upstream and downstream is 2 hours. What is the upstream speed, if the downstream and upstream distance are 2 km each?

5.2 kmph

3.7 kmph

2.8 kmph

1.4 kmph

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Explanation:

Option D
Solution:
2/x + 2/(x+2) = 2.
x²– 2 = 0
x = 1.414 kmph

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The different between downstream speed and upstream speed is 2 kmph and the total time taken during ...........

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