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  • In a well there is 800 liters of water. At the top there is a pipe that deposits 25 l per minute into the well, and at the bottom there is another pipe which withdraws 30 l per minute from the same well. How many liters of water will there be in the well

In a well there is 800 liters of water. At the top there is a pipe that deposits 25 l per minute into the well, and at the bottom there is another pipe which withdraws 30 l per minute from the same well. How many liters of water will there be in the well after 15 minutes of the pipes functioning?

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Water;in;well=800;litre\* water;deposit;in;well;per;minute=25\* Water;coming;out;from;well;per;minute=30\*So,;water;in;well;after;15;minute,\* Rightarrow 800+(25 imes 15)-(30 imes 15)\*Rightarrow 800+375-450=725\* So,;water;left;in;well;is;725;litres.

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Deependra Verma

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