Question

PLEASE HELP ANSWER!

There are 108 major sources of pollen in state A. These pollen sources are categorized as grasses, weeds, and treesIf the number of weeds is 7 less than thrice the number of grasses, and the number of trees is 3 more than thrice the number of grasses, find the number of grasses, weeds, and trees that are major pollen sources.

Answer 1

Answer: 16 grasses, 41 weeds, and 51 trees

Explanation:

You can use a variable for the different pollen sources. Use g for grass, w for weeds, and t for trees. w=3g-7. t=3g+3. g+w+t=108. In that last equation, you can substitute other values for w and t. g+(3g-7)+(3g+3)=108. combine like terms to get, 7g-4=108. This equation simplifies to g=16. Substitute 16 for g in the first 2 equations, and find that w=41, and t=51.

(Sorry if my explanation didn't make sense)