## Task 3 - 260713

For the 2nd, 3rd, and 4th grades of a school, a school garden with an area of exactly 800 square meters is available. One quarter of this area is designated for a playground and for the construction of paths, and the remaining area is to be allocated for cultivation among the three classes.

Since the individual classes have different numbers of students, namely 25 students in the 2nd grade, 20 students in the 3rd grade, and 30 students in the 4th grade, it is agreed that each student of the mentioned classes will be assigned an equal area for cultivation.

How many square meters of garden land will each of the three classes have to cultivate, then?
The area for paths and playground is $\frac{1}{4}$ of $800 \mathrm{~m}^{2}$, which is $200 \mathrm{~m}^{2}$. Therefore, $800 \mathrm{~m}^{2}-200 \mathrm{~m}^{2}=600 \mathrm{~m}^{2}$ remain for cultivation.

The total number of students in the three classes is $25+20+30=75$. Thus,

Class $2 \frac{25}{75}$ of $600 \mathrm{~m}^{2}$, which is $200 \mathrm{~m}^{2}$,

Class $3 \frac{20}{75}$ of $600 \mathrm{~m}^{2}$, which is $160 \mathrm{~m}^{2}$, and

Class $4 \frac{30}{75}$ of $600 \mathrm{~m}^{2}$, which is $240 \mathrm{~m}^{2}$

are to be cultivated.