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Question

How many litres of pure acid is there in 8 litres of a 20% solution?


A

1.5

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B

1.6

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C

1.7

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D

1.8

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Solution

The correct option is B

1.6


Let the amount of pure acid be x litres.
Total solution = 8 litres
Quantity of pure acid = 20% of the solution
So, x8=20100
x=20100×8
x=15×8
x=1.6


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