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Officer (General) |-Sonali | Janata | Bangladesh Krishi_Bangladesh Development bank ২৪.০৫.২০১৯
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662 . A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream.
- A. 2 hours
- B. 3 hours
- C. 4 hours
- D. 5 hours
- E. None of these
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অফিসার (ক্যাশ ) - Sonali | Rupali | BD Krishi | Rajshahi Krishi Unnayn | Investment Corporation Of Bangladesh - ২৯. ০৩.২০১৯
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663 . A boat sailing against a stream of river takes 6 hours to travel 24 kms, while sailing with the stream it takes 4 hours to travel the same distance. What is the speed of the stream?
- A. 1/2 km/hr
- B. 1 km/hr
- C. 2 km/hr
- D. 1.5 km/hr
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664 . A boat sails m miles upstream at the rate of r miles per hour. If the rate of the stream is s miles per hour, how long will it take the boat to return to its starting point?
- A. m/(r + 2s)
- B. m/(r + s)
- C. (m + r)/s
- D. mr - s
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Senior Officer- 8 Bank Recruitment Test 31-08-2018
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668 . A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water ?
- A. 40 minutes
- B. 1 hour
- C. 1 hour 15 minutes
- D. 1 hour 30 minutes
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