Problem Statement
From 20 L of pure milk, 5 L is removed and replaced by water. The process is repeated once more. What is the quantity of milk now?
Explanation
Use the replacement formula. After each operation milk remains in the same fraction. Remaining fraction after one step is fifteen over twenty equals three fourths. After two steps milk equals twenty times three fourths squared equals eleven point two five liters.
Code Solution
SolutionRead Only
milk = 20×(1 − 5/20)^2 = 20×(3/4)^2 = 11.25
