Question

10 litre of solution contains alcohol and water in the ratio 2:3.How much alcohol must be added to the solution to make a solution containing 60% of alchol?

a) 10.5 ltr
b) 11.5ltr
c) 12.5ltr
d) 13.5ltr​

Answer 1

Answer:

Step-by-step explanation:

10 ltr solutions m alchol and water is4:6

4+×\6=3/5

20+5×=18

5×=-2

×=-2/5 added to solution

Answer 2

Answer:

c 12.5

Step-by-step explanation:

10 × 2/5= 4 liter alcohol

10×3/5= 6 liter water

now its 40% alcohol to make it 60% 2.5 liter further alcohol added

now

4.5:3

4.5/7.5×100= 60%