Quantitative Aptitude - Arithmetic Ability Questions

If tan(A/2) = x, then the value of x is

The ratio of present ages of Ratnabali and Shaukat is 8:5. After 22 years the ratio of their ages will be 10:9. At present, what is Ratnabali's age?

A, B and C can do a job working alone in 6, 9 and 18 days respectively. They all work together for 1 day, then A and B quit. How many days C working alone will take to complete the remainder of the job?

The ratio of two positive numbers is 3:4. The sum of their squares is 400. What is the sum of the numbers?

If the angles of a triangle are in the ratio of 1 : 4 : 7, then find the ratio of the greatest angle to the smallest angle.

All sides are congruent in a _____.

What is the value of Sin 30- √2 Cos 30

Select the odd letters from the given alternatives.