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OpenStudy (anonymous):
A movie theater charges 90 for adults and 70 for senior citizens. On a day when 325 people watched the movie, the total receipts were 24,950. How many among those who paid were adults? How many were seniors?
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OpenStudy (anonymous):
a = adults s = seniors a + s = 325 90a + 70s = 24950 a = 325 - s 90(325 - s) + 70s = 24950 -20s + 29250 = 24950 20s = 4300 s = 215 a = 325 - 215 = 110
OpenStudy (anonymous):
Any questions?
OpenStudy (nincompoop):
systems of equation by substitution
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