Quantitative Aptitude - Arithmetic Ability Questions

A sum of money (P) doubles in 10 years. How much would it be in 20 years at the same rate of simple interest?

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?

If Tan A = 15/8 and Tan B = 7/24, then Cos(A - B) = ?

Rs 9000 is divided among P, Q and R in the ratio of 5 : 6 : 7. What is the share (in Rs) of R?

Select the odd word from the given alternatives.

The value of 2.31 x 0.34 = ?

What is the value of Sin 30° + Cos 30°?

What is the value of Cot 45° + Cosec 60°?