Question

In a 120 litsies of mixtuace of milk & water water is 20% How many litres of pure water must be added to the mixture to make the proportion of water is 25%​

Answer 1

Step-by-step explanation:

the proportion of water in milk now is 24 litre

the water to be added to make it 25% be y

24+y/120+y= 25%

24+y/120+y = 1/4

4(24+y) = 120+y

96+4y = 120+y

4y-y = 120-96

3y = 24

y = 8

so the water should be added is 8 litre