Quantitative Aptitude - Arithmetic Ability Questions

If the selling price of an article is doubled, then its loss percentage gets converted into the equal profit percentage. What is the loss percentage?

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?

A circle and a square have same area. The ratio of the side of the square to the radius of the circle will be:

A's salary was decreased by 50% and subsequently increased by 50%. How much percent does he lose?

Find the value of 532+108

ΔPQR is right angled at Q. QS is the altitude. PQ is 4√29 cm and PS is 8 cm. Find length of SR?

If the time increases by 7 years, then simple interest increases by Rs 8400 on a sum of Rs 6000. What is the rate (in percentage) of interest per annum?

What is the average of first 30 multiples of 9?