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Initial amount of milk = 36 liters. We need the final solution to have 20% water. Let x liters of water be added. Final solution volume = (40 + x) liters. Milk will remain the same in both the solutions. 80% of (40+x) = 36 0.8×(40+x) = 36 32+0.8x = 36 0.8x = 4 x = 5
Two trains, 'A' and 'B', are heading towards each other from opposite ends of a 360-meter bridge. Train 'A' travels at a speed of 15 m/s, and train 'B' ...
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800 metres long train crosses a man who is moving in the same direction with a certain speed, in 40 seconds. If the same train can cross a tree in 20 se...
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A man running at the speed of 5 kmph was over taken by the train moving with the speed of 41 kmph in 20 seconds. Find the length of train.
A train can cross a pole in 18 seconds. While if the train increased its speed by 75% then time taken by it to cross 444 metres long platform is 42 seco...
1600 metres long train crosses a man who is moving in the same direction with a certain speed in 25 seconds. If the same train can cross a pole in 20 se...
350 metre long train ‘A’ is running with a speed of 43.2 km/hr. Train ‘B’ which is 387 metre long is running with a speed of 90 km/h in opposite...
A train crosses a platform in 48 seconds travelling with a speed of 120 km/hr. If the length of the train be 600 metres, then the length (in metres) of ...
