Quantitative Aptitude - Arithmetic Ability Questions

At 30% discount the selling price of an article is Rs 1050. What is the selling price (in Rs) if the discount is 15%?

A man can row upstream at 12 km/hr and downstream at 18 km/hr. The man's rowing speed in still water is

If (x+1/x) = 5, then the value of 5xx2+5x+1?

cot3A is equal to

If x2 + (1/x2) = 1, then what is the value of x48 + x42 + x36 + x30 + x24 + x18 + x12 + x6 + 1?

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 1,800, and Rs 1,926 respectively, what is the rate of interest?

ΔABC is similar to ΔPQR. If ratio of perimeter of ΔABC : perimeter of ΔPQR is 5:9 and if PQ = 45 cm, then the length of AB (in cm) is?

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?