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Question
A tank can hold 200 litres of water. At present, it is only 40% full. How many litres of water to fill in the tank, so that it is 75% full?
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Solution
Capacity of the water tank = 200 litres
Percentage of water in the tank = 40%
Percentage of water to fill = Upto 75%
Difference in percentage = 75% – 40% = 35%
∴ Volume of water to be filled = Percentage of difference × total capacity
= `35/100 xx 200` = 70 l
70 l of water to be filled
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