1. A man can row downstream at the rate of 12 Km/hr and upstream at 6 Km/hr. Find man's rate in still water and the rate of current? |
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2. A man can row 14 Kmph in still water. It takes him twice as long to row up as to row down the river. Find the rate of stream? |
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3. A man rows down stream 40 km and upstream 21 km taking 4 hrs each time. what is the velocity of current? |
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4. A man can row 12 Kmph in stil water and the river is running at 4 Kmph. If the man takes 2 hour to row to a place and back how far is the place? |
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5. A man can row downstream at the rate of 32 Kmph and upstream at 8 Kmph. Find the man’s rate in still water and rate of current? |
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6. A man can row 36 kmph in still water. It takes him thrice as long to row up as to row down the river. Find the rate of the stream? |
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7. In a stream running at 3 Kmph, a motor boat goes 10 Km upstream and back again to the starting point in 57 minutes. Find the speed of motor boat in still water? |
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8. In an hour a boat goes 10 Km along the stream and 4 Km against the stream. The speed of the boat in still water (in Kmph) is: |
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9. The greatest number of four digits which is divisible by 21, 35, 49 and 63 |
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10. Find the greatest number that will divide 54, 87 and 172 so as to leave the same remainder in each case |
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