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Minchanka [31]
3 years ago
15

A box contains orange balls and green balls. The number of green balls is seven more than three times the number of orange balls

. If there are 67 balls altogether, how many green balls and how many orange balls are there in the box?
Mathematics
1 answer:
OverLord2011 [107]3 years ago
3 0

Answer:

52 green, 15 orange

Step-by-step explanation:

g + o = 67   g = green, o = orange, x = total

g = 3o + 7

use substitution: (3o + 7) + o = 67

solve for o:

4o + 7 = 67

4o = 60

o = 60/4 = 15

solve for g:

g + 15 = 67

g = 52

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