Quantitative Aptitude - Arithmetic Ability Questions

If sinA + sin2A = 1 then what is the value of cos2A + cos4A ?

If 8x/3 + [7(5 - 2x/3)]/2 = 1/2 , then what is the value of x?

The base of a prism is in the shape of an equilateral triangle. If the perimeter of the base is 18 cm and the height of the prism is 20 cm, then what is the volume (in cm3) of the prism?

A product was sold foe Rs. 4,500 at a profit of 12.5%. What was the amount of profit?

The sum of all prime numbers between 58 and 62 is

A can do a work in 24 days and B in 40 days. If they work on it together for 10 days, then what fraction of work is left?

What is the value of (cosec30 - 1/√3)?

Two men are on opposite sides of a tower. They measure the angles of elevation of the top of the tower as 30 ̊ and 45 ̊ respectively. If the height of the tower is 50 m, the distance between the two men is (Take √3 = 1.73)