A chemist needs 20 litres of a saline solution that is 25% salt by volume
MATHEMATICS · Subjective · CBSE · Mathematics · Pair of Linear Equations in Two Variables · Pair of Linear Equations in Two Variables
Problem
A chemist needs 20 litres of a saline solution that is 25% salt by volume. He has in stock a 30% saline solution and a 10% saline solution only.
(i) If x litres of the 30% solution and y litres of the 10% solution are to be mixed, frame two equations connecting x and y.
(ii) Solve the equations obtained to find the values of x and y.
(iii) Explain why the values obtained are reasonable in the given context.