Question

Question #0066f

Answer 1

depends...

Explanation:

Formula:
Adults (`x`) x$15/adult + Children (`y`) x$5/child = $55
`rarr 15x + 5y = 55`
`rarr 3x + y = 11`

`rarr y = 11 - 3x`

Therefore,
no adults: 11 - 0 = 11;
1 adult: 11-3 = 8;
2 adults: 11-6 = 5;
3 adults: 11-9 = 2;
4 adults: too expensive...