Quantitative Aptitude - Arithmetic Ability Questions

The ratio of present ages of Ranjini and Shahid is 5:4. After 13 years the ratio of their ages will be 6:5. What is Ranjini's present age?

The sum of a non-zero number and ten times its reciprocal is 7. Find the number.

The average of 21 numbers is 12. The average of the first 11 numbers is 9 and the average of the last 11 numbers is 15. What is the value of the middle number?

The point R(a,b) is first reflected in origin to R1 and R1 is reflected in X-axis to (-5,1). The co-ordinates of point R are?

If x = 3+13, then the value of x-12642x-1x-233 is

The price of an article is cut by 9%, to restore to its original value, the new price must be increased by

If a - b = 2 and ab = 8, then what is the value of a3 - b3?

What is the value of Tan 45° + 4/√3 Sec 60°?