Answer:
$26.50 - $1.50 = $25.00
Let b = cost of burger
s = cost of souvenir
p = cost of pass
b + s + p = $25.00
b = (1/3)s
s = (1/2)p---->p = 2s
(1/3)s + s + 2s = $25.00
(10/3)s = $25.00
s = (3/10)($25.00) = $7.50
b = (1/3)($7.50) = $2.50
p = 2($7.50) = $15.00
The burger costs $2.50, the souvenir costs $7.50, and the pass costs $15.00.