Question 1208613
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x = number of adults
y = number of students


x+y = 276 since there are 276 total people
Solving for x gives us x = -y+276


6x = money from just the adults
4.5y = money from just the students


6x+4.5y = total amount of money brought in
6x+4.5y = 1632
6( <font color=red>x</font> )+4.5y = 1632
6( <font color=red>-y+276</font> )+4.5y = 1632  ....... replace x with -y+276
I'll let the student take over from here.
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