At 10 square yards, both of the prices would be at $180
Answer:

Step-by-step explanation:

Firsly remove the $350
$625-$350=$275
Each person is $6,so divide that from $275
275/6=45R5
The remaining $5 cannot be used to pay for another person,so we leave it as extras.
Therfore,45 people were at the the party.
Answer:
$75
Step-by-step explanation:
If they have a total of w dollars to buy 5 tickets, and each ticket costs 15 dollars, $15 x 5 tickets = $75.
6x - 5y = 5
3x + 5y = 4
----------------add
9x = 9
x = 9/9
x = 1 <===