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OpenStudy (anonymous):
Adult tickets for a play cost 25$ each and children's cost 15$ each. The total receits were 7200$ and the total attendence was 400. How many adults and how many children attended?
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OpenStudy (anonymous):
a + c = 400 25a+ 15c = 7200
OpenStudy (anonymous):
solve system by substitution or elimination...are you familiar with how to do that?
OpenStudy (anonymous):
a=400-c 25(400-c)+15c = 7200 10000-25c+15c=7200 10000-10c=7200 -10c=-2800 c=280 a=400-280=120
OpenStudy (anonymous):
check 120+280=400 25(120)+15(280)=7200 3000+4200=7200 7200=7200
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