Quantitative Aptitude - Arithmetic Ability Questions

When 0.090909.....is converted into a fraction, then the result is

The price of an article is decreased by 10%. To restore it to its former value, the new price must be increased by

Ravi had five subjects in his final examination. The maximum marks in each subject are 100. If his percentage in four subjects is 80, and he scores 65 marks in the fifth subject, determine his overall percentage for the five subjects.

5 bottles cost as much as 2 bags. The cost of 15 bottles and 4 bags is Rs 2,000. What is the price (in Rs.) of a single bag?

If 1 + secA = x, then the value of x is

What is the value of 36+729381+643

If P = 7 + 4√3 and PQ = 1, then what is the value of (1/P2) + (1/Q2)?

The average age of A and B is 18 years. After 3 years, C joins them and the average ages of A, B and C becomes 22 years. The age of C is ?