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A Boat is moving in downstream and speed...

A Boat is moving in downstream and speed of Boat in still water is 5 times speed of current. After 16 km due to technical problem speed of boat (in still water)
reduced by 20 % and it cover 40 km distance with this speed. If average speed of whole journey is `(7)/(20)kmpermin` , then find speed of current.

A

A)`4(1)/(8)km//hr`

B

B)`2(7)/(10)km//hr`

C

C)4 km/hr

D

D)5 km/hr

Text Solution

Verified by Experts

The correct Answer is:
C
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ADDA247-BOAT AND STREAM -Prelims Questions (Level-2)
  1. The ratio of speed of boat in still water to speed of stream is 11: 1....

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  2. A boat cover 11.2 km distance in downstream in 48 minutes. If ratio be...

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  3. A Boat is moving in downstream and speed of Boat in still water is 5 t...

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  4. Ratio of time taken to cover (A +5} km in downstream to that of time t...

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  5. Read the given information carefully and answer the following question...

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  6. Read the given information carefully and answer the following question...

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  7. Read the given information carefully and answer the following question...

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  8. Read the given information carefully and answer the following question...

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  9. Read the given information carefully and answer the following question...

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  10. Speed of a boat in still water is 20 km/hr and speed of current 'is 4 ...

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  11. In a River there are two boats A and B, where boat A covers 240 km in ...

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  12. Two banks are located on a river and are 28 km apart: Leaving one of t...

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  13. A boat covers (D + 80) km in downstream and 'D' km upstream in total ...

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  14. Upstream speed of boat is 33(1)/(3)% less than downstream speed of b...

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  15. A boat goes certain distance downstream and then returnth (3)/(4) th o...

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  16. A cruise ship X is 380 m long and travels at a speed of 32 kmph in sti...

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  17. Speed of boat in downstream is twice the speed of boat in upstream, if...

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  18. Speed of a motorboat in still water is 45 km./hr. If it takes 1 hour 2...

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  19. Aboat's speed in still water is 5 km/h. While river is flowing with a ...

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  20. A man can row at 10 kmph in still water. If it takes a total of 5 hour...

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