## Task 1 - V10721

All countries of the socialist camp together produced:

| Product | Pre-war year | 1959 |
| :--- | :--- | :--- |
| Electric power | 84.7 billion kWh | 418.2 billion kWh |
| Steel | 25.4 million t | 92.7 million t |
| Cement | 14.5 million t | 73.3 million t |

By how many percent did production increase?
With the relationship $W: G=p: 100$ (percentage value $W$, base value $G$, percentage rate $p$), for each product:

Electricity $p=493.7$, i.e., an increase of $393.7\%$; Steel $p=365.0$, i.e., an increase of $265\%$; Cement $p=505.5$, i.e., an increase of $405.5\%$.