math
posted by Anonymous .
paid before February 12th the social cost $2.00. If you paid at the door the social cost $5.00. Altogether, 110 students attended the social collecting a total of $454. How many students paid before February 12th and how many paid at the door?

e = paid early
d = paid at door
e + d = 110
2e + 5d = 454
3d = 234
d = 78
e = 32
check:
2*32 + 5*78 = 64 + 390 = 454
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