suffice measure "trees" and the difference between the subsequent tree.
solution to the problem 23:
As the poste is three times higher than the tree, that is to say that the height equivalent to a subsequent 3-trees. Or, what is the same, the difference in height between a tree and subsequent amounts to two trees. But this difference is worth 2metres, each tree has a height of 1 m.
for covering it easier with a response graph, the solution to this problem would be 23:
The correct answer is right you have several, Paula, James, Rachel ... but the most coherent explanation is to ...
