Twelve

Twelve students work on a week forestry brigade. One hundred spruces will receive x CZK, one hundred pine y CZK. How many receive each one students did in one day if they planted a total of 25,000 spruces per week and 30,000 pine trees? Express by expression.

Result

z = (Correct answer is: fr(125,42) * x + fr(25,7) * y)

Solution:

$$\begin{gathered} z=25000\mathrm{/}100\cdot x\mathrm{/}12\mathrm{/}7+30000\mathrm{/}100\cdot y\mathrm{/}12\mathrm{/}7 \\ z={\displaystyle \frac{125}{42}}\cdot x+{\displaystyle \frac{25}{7}}\cdot y \end{gathered}$$

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