Quantitative Aptitude - Arithmetic Ability Questions

Visitors to a show were charged Rs. 15 each on the first day, Rs. 7.50 on the second day, Rs. 2.50 on the third day and total attendance on three days were in the ratio 2:5:13 respectively. The average charge per person for the entire three days is

Coefficient of x in (x + 9)(8 - 5x) is

If sin (3x ­ 20°) = cos (3y + 20°), then find the value of (x + y).

The first and last terms of an arithmetic progression are 25 and ­52. What is the sum of the series if it has 12 terms?

At 10% discount the selling price of an article is Rs 4500, what is the selling price (in Rs) if the discount is 27.5%?

What is the value of tan 4π/3?

What is the value of cosecA/√(cosec2A ­- 1)?

What is the value of cosec 5π/3?