Question

15 litres of a mixture contains alcohol and water in the ratio 1 : 4. If 3 litres of water is mixed in it, the percentage of alcohol in the new mixture will be:

Options

• 15%

• `16 2/3%`

• 17%

• `18 1/2%`

Answer 1

`16 2/3%`

Explanation:

Required percentage = `(15 xx 1/5)/((15 + 3)) xx 100 = 16 2/3%`