SOLUTION: The cost of visiting a zoo is $5 for an adult and $3 for a child. By the end of the day, 630 persons had visited the zoo and the revenue for the day was $2368. How many children vi

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Question 206583: The cost of visiting a zoo is $5 for an adult and $3 for a child. By the end of the day, 630 persons had visited the zoo and the revenue for the day was $2368. How many children visited the zoo on that day?
(A) 239 (B) 240 (C) 300 (D) 390 (E) 391
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The cost of visiting a zoo is $5 for an adult and $3 for a child. By the end of the day, 630 persons had visited the zoo and the revenue for the day was $2368. How many children visited the zoo on that day?
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Quantity Eq::: a + c = 630
Value Eq::::: 5a + 3c = 2368
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Multiply thru the 1st equation by 5 to get:
5a + 5c = 5*630
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Subtract the Value Eq. from that to get:
2c = 790
c = 395 (# of children who visited the zoo that day)
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Cheers,
Stan H.







(A) 239 (B) 240 (C) 300 (D) 390 (E) 391