Problema Solution
A 10% acid solution is to be mixed with a 50% solution to get 200 liters of a 20% solution. How many liters of each solution should be used?
Answer provided by our tutors
let x litre of 10% solution used
10% of x + 50% of (200-x) = 20% of 200
10x + 10000 - 50x = 4000
-40x = -6000
x = 150
hence 10% solution = 150litres and 50% solution = 50 litres