Question

The original mixture of alcohol and water is 45 litres and their ratio is 2:1 .If some more water is added in this mixture then the ratio becomes 1:2 then What will the initial quantity of water?

Answer 1

Answer:

45 litres of water

Step-by-step explanation:

alcohol and water = 2:1 = 45 litres

         alcohol = (2*45)/3 = 30 litres

         water = (1*45)/3    =  15 litres

30 litres of alcohol and 15 litres of water mixed in 2:1

x be the water added to form 1:2 , 30:(x+15) = 2:1

30/(x+15)=1/2

cross multiply

60=x+15

x=45