# 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:

$z=25000/100 \cdot \ x /12/7 + 30000/100 \cdot \ y /12/7 \ \\ z=\dfrac{ 125 }{ 42 } \cdot \ x + \dfrac{ 25 }{ 7 } \cdot \ y$

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