Quantitative Aptitude - Arithmetic Ability Questions

A person borrows some money for 4 years at the rate of simple interest. If the ratio of principal and total interest is 5 : 1, then what is the rate ( in percentage) of interest?

If x – y – √18 = –1 and x + y – 3√2 = 1, then what is the value of 12xy(x2 – y2)?

In ΔABC measure of angle B is 90 deg. If cosA = 5/13, and AB = 10 cm, then what is the length (in cm) of side BC?

The value of tan 315° cot (­ -405° ) is equal to

Area of _____ equals half the product of its diagonal.

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 x3-2x=3x, then the value of x2+1x2 will be

If 1/6 of x - 7/2 of 3/7 equals - 7/4, then the value of x is