A number reduced by 25% becomes 225. What percent should it be increase so that it becomes 390 ?

Find the : (550% of 250) ÷ 275 = ?

A's salary was decreased by 50% and subsequently increased by 50%. How much percent does he lose ?

If 20% of (A + B) = 50% of B, then value of $$\frac{2A - B}{2A + B}$$   is :

There are 600 boys in a hostel. Each plays either hockey or football or both. If 75% play hockey and 45% play football, …

The difference between the value of the number increased by 20% and the value of the number decreased by 25% is 36. Find…

If three-fifth of sixty percent of a number is 36, the number is :

A fraction in reduced form is such that when it is squared and then its numerator is reduced by $$33\frac{1}{3}$$ % and …