The prices of two articles are in the ratio 3 : 2 respectively. The price of the first article is increased by 40% and that of the second article is decreased by x%. If the new ratio of both the articles is : 7 : 3 then what is the value of x?

A number if required by 25% becomes 225. By what percent should be increased so that it becomes 375?

Two students appeared for an examination. One of them secured 9 marks more than the other and his marks were 56 % of the sum of their marks. The marks obtained by them are 

A retailer gets a discount of 40 % on the printed price of an article. The retailer sells it at the printed price. His gain percent is 

A person spends 40% of his monthly income. The monthly income of the person is increased by 15% and his expenditure is decreased by 22%. What is the approximate percentage increase in his savings?

Find the greatest perfect square number of 5 digits.

In a moter of 120 machine parts, 5 % parts were defective, in another motor of 80 machine parts, 10 % parts were defective. For the two motors considered together, the percentage of defective machine parts were 

Two numbers are respectively 20% and 50% of a third number. What percent is the first number of the second?