Task 1 - 170521 In the school garden, students planted peas as seeds on an $8 \mathrm{~m}^{2}$ large bed, as densely as is customary on large areas. The harvest yield of this bed was fifteen times the seed.

How many $\mathrm{kg}$ of peas did the students harvest from this bed, if $2 \mathrm{dt}$ of peas are commonly used as seed for a 1 ha large area?
For 1 ha: $10000 \mathrm{~m}^{2}$, $2 \mathrm{dt}=200000 \mathrm{~g}$ of seed is common; consequently, $20 \mathrm{~g}$ are needed for each $1 \mathrm{~m}^{2}$. For $8 \mathrm{~m}^{2}$, $8 \cdot 20=160$ therefore $160 \mathrm{~g}$ of seed were taken.

The harvest yield was $15 \cdot 160=2400$, thus $2400 \mathrm{~g}=2.4 \mathrm{~kg}$.