## Task 1 - 180521

The tracks of the BAM will have a total length of $3200 \mathrm{~km}$ upon completion. Every $1 \mathrm{~m}$ of track corresponds to $2 \mathrm{~m}$ of rail.

How many tons of steel will be needed for the rails of the BAM in total, if $65 \mathrm{~kg}$ of steel is required for every $1 \mathrm{~m}$ of rail?
Due to $3200 \cdot 2=6400$, a total of $6400 \mathrm{~km}$ of rails are needed.

Due to $6400 \mathrm{~km}=6400000 \mathrm{~m}$ and $6400000 \cdot 65=416000000$, a total of $416000000 \mathrm{~kg}=416000$ $\mathrm{t}$ of steel will be needed for these rails.