7. Kaja bought 1.2 kilograms of apples at the price of 8 2/5 kroons a kilogram in one shop, and 3 5/8 kilograms at the price 7.5 kroons a kilogram in another shop. How much did the apples cost and how much was left over from 100 kroons?

8. There are 18 students in a class. In November there were 22 food-days and 1 food-day costs 5 1/2 kroons. 2 students were absent for two days. Find out the total sum for in the class.

9. Find out which is bigger whether 3/4 from number 60 or 5/8 number 80?