Compound interest earned = 4000 × {1 + (10/100)}2 – 4000 = 4840 – 4000 = Rs. 840 So, selling price of the article = 840 × 1.2 = Rs. 1008
The ratio of the speed of the boat in upstream to that of in downstream is 5:9, respectively. If the speed of the current is 7 km/h, then find the speed...
A boat takes half the time to move a certain distance downstream than upstream. the ratio of the boat's speed in still water and that of the current is.
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A boat can row to a place of 60km away and come back in
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A boat goes 5 km an hour in still water, but takes twice as much time in going the same distance against the current. The speed of the current (in km/ho...
A boat can travel 21 km downstream in 42 min. The ratio of the speed of the boat in still water to the speed of the stream is 5: 1. How much time will t...
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