Quantitative Aptitude - Arithmetic Ability Questions

The diagonal of a square equals the side of an equilateral triangle. If the area of the square is 6√3 sq cm, what is the area of the equilateral triangle?

60% of P = 50% of Q and Q = x% of P. What is the value of x?

If a - b = 4 and ab = -3, then what is the value of a3- b3?

What is the value of Cot 45°+ 1/3 Cosec 60°?

∆LMN is right angled at M. If m ∠N = 45°. What is the length (in cm) of MN, if NL = 6√2 cm?

If 3 dupatta is offered free on purchase of 6 dupattas priced Rs 1200 each what is the effective discount on each dupatta?

A number is decreased by 10% and the resulting number is again decreased by 20%. What is the final percentage of decrease?

The ratio of present ages of R and S is 6:7. Before 12 years the ratio of their ages was 9:11. What is R's present age (in years)?