Question

if 400 litres of milk salution has 30%
milkinit, then how much milk should
be added to make it 60% in the
salutian.​

Answer 1

Step-by-step explanation:

milk solution contains milk and water =400l

let the milk to be added to solution = x

milk has 100% milk

average of solution and milk is 60%

(400x30% + x×100%)/ (400+x) =60%

400×0.3 +x×1 = 0.6(400+x)

120+x = 240 +0.6x

x(1-0.6) = 240-120

x×0.4=120

x = 300 l

300 liters of milk should be added