Simplification

Algebra Level 1

A tank is 2 5 \frac{2}{5} full. If 16 16 litres of water is added to the tank, it becomes 6 7 \frac{6}{7} full. What is the capacity of the tank in litres?


The answer is 35.

Anuj Shikarkhane by Anuj Shikarkhane , 19, India

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3 solutions

Mona Mazen
Jul 17, 2014

xlitres=2/5y. xlitres+16=6/7y. substracting these 2 equations, x is eliminated. y=35.

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Anuj Shikarkhane
Jun 21, 2014

6/7x- 2/5x=16 x=35

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Astro Enthusiast
Jun 19, 2014

Let x be the capacity of the tank. 2/5 x + 16=6/7x.

Solving x: 16/35x=16 x= 35

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