Question 993949
x=SR
y=student
7x+14y=175
12x+7y=215
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7x+14y=175
-24x-14y=-430, multiplying it by (-2).  Now add
-17x=- 255
x=$15 SR
105+14y=175
14y=70
y=$5 student
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check with second
12*15=$180
7*5=$35. They add to $215