Question 495669
600 = total number of people (given)
$7000 = total (given)
x = number of adults
600 -x = number of children
13x = receipts from adults
11(600-x) = receipts from children
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13x + 11(600-x) = 7000
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13x + 6600 - 11x = 7000
2x = 400
x = 200
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(600-x) = 400
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So, the answer appears to be:
200 adults
400 children
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But ALWAYS check your answer!
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13*200 = 2600 received from adults
11*400 = 4400 received from children
Total = 7000
Correct.
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Re-read the question to make sure you answer it.
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Answer:
A total of 400 children attended.
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Done.