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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 7

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? - Mathematics

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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?

Sum
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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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Chapter 2: Percentage and Simple Interest - Exercise 2.5 [Page 45]

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Samacheer Kalvi Mathematics - Term 3 [English] Class 7 TN Board
Chapter 2 Percentage and Simple Interest
Exercise 2.5 | Q 21 | Page 45
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