A chemist needs 30 litres of a acid solution by mixing a acid solution with a acid…

MATHEMATICS · Single correct · CBSE · Mathematics · Pair of Linear Equations in Two Variables · Pair of Linear Equations in Two Variables

Problem

A chemist needs 30 litres of a

40\%

acid solution by mixing a

25\%

acid solution with a

50\%

acid solution. The required volumes of the

25\%

solution and the

50\%

solution, respectively, are (a)

15\text{ litres and }15\text{ litres}

(b)

12\text{ litres and }18\text{ litres}

(c)

18\text{ litres and }12\text{ litres}

(d)

10\text{ litres and }20\text{ litres}