Two full tanks, one shaped like a cylinder and the other like a cone, contain jet fuel. The cylindrical tank holds 500 litres more than the conical tank. After 200 litres of fuel has been pumped out from each tank the cylindrical tank contains twice the amount of fuel in the conical tank. How many litres of fuel did the cylindrical tank have when it was full?
Let the current capacity of conical flask be C. So, cylinder = C+500.
After pumping out 200 liters, C+300 = 2(C-200) => C = 700
So, full capacity of cylinder = 700+500 = 1200
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