A mixture of 40 L of alcohol and water contains 10% water. How much water should be added to this mixture so that new mixture contains 20% water (in litres)? |
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a) |
5 |
b) |
6 |
c) |
7 |
d) |
8 |

A mixture of 40 L of alcohol and water contains 10% water. How much water should be added to this mixture so that new mixture contains 20% water (in litres)? |
|||||||

a) |
5 |
b) |
6 |
c) |
7 |
d) |
8 |

1 Answer

127 votes

Quantity of water in 40 L of mixture =

Let quantity of water added be litres.

Then % of water in the resulting mixture =

⇒litres

127 votes

127