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Standard VIII

Mathematics

Compound Variation

How many litr...

Question

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

1.4

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1.6

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Solution

The correct option is C 1.6
$8 l$ of a $20 %$ solution
$= 8 \times 20 / 100$
$= 8 \times \frac{1}{5} = 1.6$ l
Hence $1.6 l$ of pure acid are there in $8$ litres of a $20 %$ solution.

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

The correct option is C 1.68 l of a 20% solution=8×20/100=8×15=1.6lHence 1.6 l of pure acid are there in 8 litres of a 20% solution.

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

The correct option is C 1.6
$8 l$ of a $20 %$ solution
$= 8 \times 20 / 100$
$= 8 \times \frac{1}{5} = 1.6$ l
Hence $1.6 l$ of pure acid are there in $8$ litres of a $20 %$ solution.