onclecastor353 onclecastor353

02-10-2021
Mathematics

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52 students in class plant trees, every guy plants 3 trees and every girl plants 2 trees. We know the guys planted 36 more trees than the girls, how many guys are in this class?

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Jiglinsky Jiglinsky

02-10-2021

Answer:

x+y=52

3x=2y+36

_____

x=-y+52

-3y+156=2y+36

5y=120

y=24

52-24=30

30 guys in the class

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