## Task 1

All 3rd grade classes of the Erich-Weinert-Oberschule are participating in the ABC campaign "Schnüffelnase". Class 3a collected $186 \mathrm{~kg}$ of waste paper, class $3 \mathrm{~b}$ only a third of that. Class 3c had twice as much as class 3b and 9 kilograms more.

How many kilograms of waste paper did class 3c collect?
Collection result of class $3 \mathrm{~b}: 186: 3=62 \mathrm{~kg}$. Collection result of class 3 c: $62 \cdot 2+9=133 \mathrm{~kg}$.[^26]