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Study the following pie-charts and table...

Study the following pie-charts and table carefully and answer the questions that follow.
Some values' are missing. Answer the questions on the basis of the given table and the information given in the questions. The speed of stream is the same for both upstream and downstream distance on respective days.


The time taken to cover the upstream distance on Thursday is 12 hours more than the time taken to cover the downstream distance on Friday. The total speed of the boat in still water on Thursday and Friday is 11 km/ hr. What will be the ratio of the speed of the boat in still water on Thursday to that on Friday?

A

`6:7`

B

`4:5`

C

`7:9`

D

`5:6`

Text Solution

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The correct Answer is:
D
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