Question

In a mixture of milk and water , there is only 26% water .after replacing 7 litres of mixture with 7 litres of pure milk ,the percentage of milk in the mixture become 76%.the quantity of mixture is

Answer 1

26 percent water implies 74 percent milk
add 7 liters of milk the milk percentage increases to 76
let x be the total quantity of the fluid
74x/100 + 7 = 76x/100
2x/100 = 7
x = 350 liters