Question 708620: A carnival made exactly 200$ in one afternoon. Tickets for adults cost $20. Tickets for children cost $15. How many combinations of adult and children's tickets could have been sold? What are the combinations.
Please help & show how you got the answer, I have been stuck on this question for over an hour and its driving me crazy !!!
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A carnival made exactly 200$ in one afternoon. Tickets for adults cost $20. Tickets for children cost $15. How many combinations of adult and children's tickets could have been sold? What are the combinations.
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Value Equation:
20a + 15c = 200 dollars
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4a + 3c = 40
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a = (-3/4)c + 40
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If a is to be a whole number "c" must be divisible by 4
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If c = 4, a = 37
If c = 8, a = 34
If c = 12, a = 31
See the pattern?
Cheers,
Stan H.
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