Problema Solution
There are 48 major sources of pollen in state A. These pollen sources are categorized as grasses, weeds, and trees. If the number of weeds is 9 less than twice the number of grasses, and the number of trees is 2 more than twice the number of grasses, find the number of grasses, weeds, and trees that are major pollen sources.
Answer provided by our tutors
let 'g' represent the number of grasses, then '2g-9' represents the number of weeds and '2g+2' represents the number of trees
48 = g + (2g-9) + (2g+2)
solving for 'g' we have g=11
2*11 - 9 = 13
2*11 + 2 = 24
there are 9 grasses, 13 weeds and 24 trees