How Much Compound to be Added, So That A Become 20%?

40 litres of a compound contains 10% of a chemical A. The amount of A to be added to the compound so that the percentage of A in the new compound is 20%, is

  1. 5 litres
  2. 8 litres
  3. 18 litres
  4. 2 litres
Monis Rasool Professor Asked on 10th November 2015 in Maths.
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  • 1 Answer(s)

    Answer is 2 litres

    Monis Rasool Professor Answered on 10th November 2015.
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