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Answer:
Green balls = 76
Orange balls = 22
Explanation:
g = 10 + 3n Eq. 1
g + n = 98 Eq. 2
g = green balls
n = orange balls
From Eq. 2:
g = 98 - n Eq. 3
Equalizing Eq. 1 and Eq. 3
10 + 3n = 98 - n
3n + n = 98 - 10
4n = 88
n = 88/4
n = 22
From Eq. 3
g = 98 - 22
g = 76
Check:
from Eq. 1
g = 10 + 3n
76 = 10 + 3*22
76 = 10 + 66
76 green, 22 orange
g = green, o = orange, x = total
use substitution: (3o + 7) + o = 67
solve for o:
solve for g:
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