Quantitative Aptitude - Arithmetic Ability Questions

In a college union, there are 48 students. The ratio of the number of boys to the number of girls is 5:3. The number of girls to be added in the union, so that the number of boys to girls in 6:5 is

By increasing the price of entry ticket to a fair in the ratio 7:17, the number of visitors to the fair has decreased in the ratio 9:5. In what ratio has the total collection increased or decreased?

What is the value of (1 + cotA)2 + (1 -­ cotA)2?

What is the value of 53% of 7400?

The marked price of a book is Rs 4200. The shopkeeper gives two successive discounts of 25% and y% to the customer. If the customer pays Rs 2898 for the book, then what is the value (in percentage) of y?

If P = 350 and Q = 600, then P is how much percentage less than Q?

The marked price of a shirt is twice of the cost price. To earn a gain of 25%, what should be the discount percentage?

A invested an amount of x rupees in a bank for 2 years which gave 5% interest in year 1 and 6% interest in year 2. The amount received after 2 years is Rs 24,486. What is the value of x?