Quantitative Aptitude - Arithmetic Ability Questions

If a/(a+b) = 15/21, what is (a+b)/(a-b) is equal to?

Cost of 8 pencils, 5 pens and 3 erasers is Rs 111. Cost of 9 pencils, 6 pens and 5 erasers is Rs 130. Cost of 16 pencils, 11 pens and 3 erasers is Rs 221. What is the cost (in Rs) of 39 pencils, 26 pens and 13 erasers?

A sum becomes Rs 2286 in 3 years and Rs 2448 in 4 years at simple interest. What is the rate (in percentage) of interest per annum?

36 is what percent of 80?

In the following question, select the odd word from the given alternatives.

A and B started a partnership business investing in the ratio of 3 : 8. C joined them after 4 months with an amount equal to 3/4th of B. What was their profit (in Rs) at the end of the year if C got Rs 24,000 as his share?

0.06% of 250% of 1600 is _________.

What is the discount percentage offered on a book having marked price Rs 2150 being sold at Rs 1892?