Question
Speed of a boat in still water to speed of boat in
upstream is 7:5. If the boat can travel 360 km in downstream in 5 hours, then find the time taken by the boat to cover 28 km in still water.Solution
Let speed of boat in still water and speed of boat in upstream be ‘7x’ km/h and ‘5x’ km/h, respectively. Speed of stream = 7x – 5x = 2x km/h Speed of boat in downstream = 7x + 2x = 9x km/h So, 9x = 360/5 = 72 Or, x = 8 Speed of boat in still water = 7 × 8 = 56 km/h Desired time = 28/56 = 30 minutes
In each of the following questions select the related letter/word/figure/number from the given alternatives.
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C L _ I M C _ A I M C L _ _ M CL _ I M
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Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is rela...
Select the option that is related to the third number in the same way as the second number is related to the first number.
13 : 2366 :: 9 : ?
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