When the price of an audio system was reduced by 20%, the sale increased by 80%. What was the net effect on the sale?

Present age of Ram and Shyam are in the ratio of 4: 5 respectively. Five year hence the ratio of their age becomes 5:6 respectively. What is Ram’s present age?

A man sells an article at 5 % above its cost price. If he had bought it at 5 % less than what he had paid for it and sold it at Rs. 2 less, he would have gained 10 %. The cost price of the article is 

A, B and C invested capital in the ratio of 3 : 4 : 8. At the end of the business term, they received the profit in the ratio of 2 : 3 : 5. What is the ratio of their invested time?

Directions:  Study the bar-graph given below & answer the questions.
Pie-chart given below shows the percentage distribution of total no. of boys in six different Schools.
Total Boys in all schools together = 6400

If the ratio boys to girls in School A and School B is 2 : 3 and 3 : 7 respectively. Then find the difference of total girls in school B and A?

A alone can complete a work in 6 days and B alone can complete the same work in 8 days. In how many both A and B together can complete the same work ?

The line graph shows the number of vacancies of accountants in a certain company. Study the diagram and answer the following questions.

By what percent does the vacancies got increased in year 2016 from 2011?

The difference between the compound interest and simple interest on a certain sum at the rate of 5% p.a in 3 years is Rs. 15.25. The sum is: