Quantitative Aptitude - Arithmetic Ability Questions

A dealer is selling an article at a discount of 5% on the Marked price. If the Marked price is 12% above the cost price and the article was sold for Rs. 532 then the cost price is (in Rs.)

If U = 450 and V = 585, then V is how much percentage more than U?

If √(cosec2A - 1) = x, then the value of x is

If 7x + 6y = 5xy and 10x ­- 4y = 4xy, then value of x and y is

A helicopter, at an altitude of 1500 m, finds that two ships are sailing towards it, in the same direction. The angles of depression of the ships as observed from the helicopter are 60° and 30°respectively. Distance between the two ships, in metres is

The average weight of 25 candles is 40 grams. If some candles of weight 50 grams each were removed, then average weight becomes 37.5 grams. How many candles of weight 50 grams each were removed? 

10 people can build a wall in 12 days. Six people, each only half as efficient as those in the first group, will be able to complete 3/5 of such a wall in

The effective annual rate of interest corresponding to a nominal rate of 15% per annum payable half-yearly is