Milk and water
Algebra
Level
2
The ratio of milk and water is 2 : 1 in a mixture of 120 Litres. If the ratio is to be 1 : 2, then the quantity of water to be further added is :
80 litres
60 litres
40 litres
120 litres
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1 solution
let x =quantity of milk let y= quantity of water let Z=additional quantity of water total volume= 120 liters ratio of milk to water= 2:1 Therefore x=2y solution : x+y =120 liters 2y+y=120 liters y=40 liters x=80 liters new ratio 2: 1 80/(40+z)=1/2 z=120liters