Cody notices that for every 2 evergreen trees on the school campus there are 7 other trees. If there are a total of 99 trees on
the campus how many of them are not evergreen
1 answer:
Answer:
77
Step-by-step explanation:
For each 2 evergreens there are 7 other trees.
Add 2 +7 = 9.
For each 7 non-evergreens there are 9 trees of all types.
The ratio of non-evergreens to total trees is 7/9.
Let x = number of non-evergreens.
7/9 = x/99
9x = 7 * 99
Divide both sides by 9.
x = 7 * 11
x = 77
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