Tickets to the Valentines dance cost three dollars per person or $5 per couple. If $475 worth of tickets were sold in 180 people attended to the dance how many couples were there?
Let the of single persons =P Let the number of couples =C
3P + 5C =475,...................(1) P + 2C =180....................(2), solve for P, C
P =50 - single persons C =65 - couples x 2 =130 persons
