## Task 2

The students of a 4th grade class are sewing their own work aprons. For ten students, the teacher buys 6 meters of fabric. However, there are 30 students in the class.

a) How many meters of fabric will be needed for all 30 students?

b) How many more meters of fabric does the teacher need to buy?
a) For all students, 18 meters of fabric are needed.

b) The teacher still needs to buy 12 meters of fabric.

### 11.6 7th Olympiad 1969

### 11.6.1 1st Round 1969, Class 2