Quantitative Aptitude - Arithmetic Ability Questions

If Rajan purchase 21 pens for Rs 20 and sell all the pens at the rate of 20 pens for Rs 21, then what will be the profit percentage?

Mr. Mahesh sold a bus for Rs. 22,100 with a loss of 15%. At what price should the bus be sold to get a profit of 15%?

If cosecA - cotA = x, then the value of x is

The point Q(a,b) is first reflected in y­-axis to Q1 and Q1 is reflected in x­axis to (­-5,3). The co­ordinates of point Q are

The areas of two similar triangles ΔABC and ΔPQR are 36 sq cms and 9 sq cms respectively. If PQ = 4 cm then what is the length of AB (in cm)?

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

The inradius of a equilateral triangle is 10 cm. What is the circum-radius (in cm) of the same triangle?

If sin ­- 5π/3 = x, then the value of x is