1] A mixture contains milk and water in the ratio 5:1.On adding 5 litres of water,the ratio of milk and water becomes 5:2.The quantity of milk in the mixture is
a]16 litres b]25 litres c]32.5 litres d]22.75 litres
5x/(x+5) = 5/2
10x = 5x+25
5x = 25
x = 5
quantity of milk = 5x = 25 litres
2] A mixture contains alcohol and water in the ratio 4:3.On adding 5 litres of water,the ratio of alcohol and water becomes 4:5.The quantity of alcohol in the mixture is
a]16 litres b]10 litres c]2.5 litres d]25 litres
a]16 litres b]25 litres c]32.5 litres d]22.75 litres
5x/(x+5) = 5/2
10x = 5x+25
5x = 25
x = 5
quantity of milk = 5x = 25 litres
2] A mixture contains alcohol and water in the ratio 4:3.On adding 5 litres of water,the ratio of alcohol and water becomes 4:5.The quantity of alcohol in the mixture is
a]16 litres b]10 litres c]2.5 litres d]25 litres
thank you very much. this guidance is very much helpful to me. thanks.-- Saibajeet Dey.
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