Some visitors paid a total of $1088 for entrance tickets to a theme park. The entrance ticket for a child cost $8. The entrance ticket for an adult cost 3 times as much. If there were 20 more adults than children, how many of the visitors were
- children?
- adults?
|
Adults |
Children |
Total |
Number |
1 u + 20 |
1 u |
|
Value |
$24 |
$8 |
|
Total value |
24 u + 480 |
8 u |
$1088 |
(a)
Cost of an adult ticket
= 3 x 8
= $24
Cost of all the adult tickets
= 24(1 u + 20)
= 24 u + 480
Total cost of the tickets
= 24 u + 480 + 8 u
= 32 u + 480
32 u + 480 = 1088
32 u = 1088 - 480
32 u = 608
1 u = 608 ÷ 32 = 19
Total number of children
= 1 u
= 19
(b)
Total number of adults
= 1 u + 20
= 19 + 20
= 39
Answer(s): (a) 19; (b) 39