How many litres of pure acid are there in 10 litres of a 25% solution
Choose the correct choice from the following:
A) 1.5  B) 1.6  C) 2.5  D) 1.8  E) 1.9

Rationale: explanation : question of this type looks a bit typical , but it is too simple , as below . . . it will be 10 * 25 / 100 = 2.5 answer : option c
Answer: C