Proportion 3

For every eight mango trees in the orchard, there are 4-star apple trees. If there are 1320 trees, how many trees of each kind are there?

Correct answer:

m =  880
a =  440

Step-by-step explanation:

$$\begin{gathered} t=m+a \\ m:a=8:4 \\ t=1320 \\ m=t\cdot \frac{8}{8+4}=1320\cdot \frac{8}{8+4}=880 \end{gathered}$$

$a=t\cdot \frac{4}{8+4}=1320\cdot \frac{4}{8+4}=440$

Try another example