The line graph shows the number of students admitted in the given year to a certain university. Study the diagram and answer the following question.

In which year were admissions greater than that of the previous year?

Two trains are running in opposite directions with the same speed. If the length of each train is 486 metres and they cross each other in 27 seconds, then what is the speed (in km/hr) of each train?

P, Q and R together can make a table in 40 minutes. P and Q together can make it in 60 minutes. How much time (in minutes) will R alone take to make the table?

If 49 is subtracted from the square of a number, then the result obtained is 576. What is the number?

If two successive discounts of 25% and 30% are given, then what will be the ratio of marked price to selling price?

Mohit sells a table at a profit of 25%. If he reduces its selling price by Rs 240, then he suffers a loss of 5%. What was the initial selling price (in Rs) of the table?

A sum of Rs 2000 becomes Rs 3645 in 2 years at a certain rate of compound interest. What will be the sum (in Rs) after 4 years?

If in the population of a town there is an increase of 44% in the first year and 75% in the second year, then what is the average rate of increase in the population?