Quantitative Aptitude - Arithmetic Ability Questions

Rs. x invested at 9% simple interest per annum for 5 years yields the same interest as that on Rs. y invested at 6.25% simple interest per annum for 8 years. Find x:y.

In the following question, select the odd word from the given alternatives.

The ratio of salary of X, Y and Z is 15 : 3 : 8. If Z gets Rs. 3960 more than Y, then what is the salary (in Rs.) of X?

What is the value of [tan (90 – A) + cot (90 – A)]2/[2 sec2(90 – 2A)]?

Triangle DEF is right angled at E. If cot D = 5/12, then what is the value of sin F?

What is the simplest form of (1 + cosA)(cosecA ­ cotA)?

If XY = a+23 and YX = 13, then find the value of X2 + Y2X2 - Y2.

If the difference between the measures of the two smaller angles of a right angled triangle is 8°, then the smallest angle is