In a school, 328 out of 400 pupils took part in sports. What percentage of the pupils took part in sports?
 

There are 40 pupils in a class. On a certain day, 5% of the pupils were absent.
How many were absent that day?
 

At a bus stop, there were 20 people waiting for the bus. When the bus arrived, only 60% managed to board it. How many were still waiting for the bus?
 

Margaret’s monthly salary was $2800 last year. This year, she was given a pay increase of 20%. Find her monthly salary for this year.
 

The interest rate offered by a bank was 2% per annum. Kamala had deposited $1 200 in the bank for a year. How much interest did she collect at the end of the year?