Quantitative Aptitude - Arithmetic Ability Questions

If tan π/3c + cosec π/6c = x, then x is

If 5/2 - (6/5)(x - 15/2) = -x/5, then what is the value of x?

At what percentage above the cost price must an article be marked so as to gain 33% after allowing a customer a discount of 5%?

The rate of working of A and B are in the ratio of 2:3. The number of days taken by them to finish the work is in the ratio:

If the ratio of cost price and selling price be 10:11, then the profit percentage is

The average of three numbers is 40. First number is 4/3 of the third number. If third number is 20 less than second number, then what is the value of second number?

Mahmood can do a piece of work in 40 hours. If he is joined by Janaki who is 50% more efficient, in what time will they together finish the work?

Simplify : -21973 × -1253 ÷ 275123