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?

Question

anonymous · Answer

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

anonymous · Answer

Any questions?

nincompoop · Answer

systems of equation by substitution