Quantitative Aptitude - Arithmetic Ability Questions

The ratio of present ages of Ratna and Shantanu is 5:4. After 19 years the ratio of their ages will be 10:9. What is Ratna's present age?

What is the remainder when 6729 is divided by 35?

A can do a work in 36 days and B in 12 days. If they work on it together, then in how many days will they be able to do the work?

The ratio of present ages of Rasika and Shami is 7:5. After 17 years the ratio of their ages will be 12:11. What is Rasika's present age?

The average marks in science subject of a class of 20 students is 68. If the marks of two students were misread as 48 and 65 of the actual marks 72 and 61 respectively, then what would be the correct average?

After a discount of 34% an article is sold for Rs. 3168. What is the marked price (in Rs) of the article?

What is the simplified value of cosec6A – cot6A – 3 cosec2A cot2A?

If P = 350 and Q = 600, then P is how much percentage less than Q?