SOLUTION: Movie tickets at a local theater cost $6 for adults and $2 for children under 12. If 175 tickets were sold, with receipts of $750, how many children's tickets were sold?

Algebra ->  Test -> SOLUTION: Movie tickets at a local theater cost $6 for adults and $2 for children under 12. If 175 tickets were sold, with receipts of $750, how many children's tickets were sold?      Log On


   



Question 702096: Movie tickets at a local theater cost $6 for adults and $2 for children under 12. If 175 tickets were sold, with receipts of $750, how many children's tickets were sold?
Found 2 solutions by sachi, josmiceli:
Answer by sachi(548) About Me  (Show Source):
You can put this solution on YOUR website!
let there are x adults & y children
then x+y=175
or x=175-y........1
cost of tickets is $6 for adults and $2 for children
then 6x+2y=750........2
putting the value from 1
6(175-y)+2y=750
or 1050-6y+2y=750
or 4y=300
or y=75
from x=175-75-100
100 children tickets were sold
ans

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +a+ = number of children's tickets sold
Let +b+ = number of adult tickets sold
(1) +a+%2B+b+=+175+
(2) +2a+%2B+6b+=+750+
--------------------
Multiply both sides of (1) by +2+
and subtract (1) from (2)
(2) +2a+%2B+6b+=+750+
(1) +-2a+-+2b+=+-350+
+4b+=+400+
+b+=+100+
and
(1) +a+%2B+b+=+175+
(1) +a+%2B+100+=+175+
(1) +a+=+75+
75 children's tickets were sold
check:
(2) +2%2A75+%2B+6%2A100+=+750+
(2) +150+%2B+600+=+750+
(2) +750=+750+
OK