Quantitative Aptitude - Arithmetic Ability Questions

On a certain principal if the simple interest for two years is Rs 1400 and compound interest for the two years is Rs 1449, what is the rate of Interest?

If (cotA - cosecA)2 = x, then the value of x is

ΔDEF is right angled at E. If secD = 25/7, then what is the value of cosecF ?

The mean of marks secured by 30 students in division-A of class X is 67, 55 students of division-B is 63 and that of 40 students of division-C is 61. What is the mean of marks of the students of three divisions of Class X?

Find the median, mode and mean of 9, 5, 8, 9, 9, 7, 8, 9, 8.

The lengths of the two diagonals of a rhombus are 5 cm and 12 cm. Find its area (in cm2)

The sum of the ages of Rohit and Ankit is 78. Rohit's age is twice the age of Ankit. What is the age (in years) of Rohit?

Krish is 5 years younger than Parthiv. Eight years ago three times the age of Krish was 10 more than twice the age of Parthiv. Find Krish's present age?