# SOLUTION: Adult memberships cost \$10. Students \$5. The students sold 50 memberships for a total of \$400. How many members are adults and how many are students?

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 Question 615051: Adult memberships cost \$10. Students \$5. The students sold 50 memberships for a total of \$400. How many members are adults and how many are students? Answer by mananth(12270)   (Show Source): You can put this solution on YOUR website!x Adult memberships y Child memberships Total memberships 1 x + 1 y = 50 .............1 Cost of total memberships 10 x + 5 y = 400 .............2 Eliminate y multiply (1)by -5 Multiply (2) by 1 -5 x -5 y = -250 10 x + 5 y = 400 Add the two equations 5 x = 150 / 5 x = 30.00 plug value of x in (1) 1 x + 1 y = 50 30 + y = 50 y = 50 -30 y = 20 y = 20.00 30 Adult memberships 20 Child memberships m.ananth@hotmail.ca