Question

Mary spent a total of $320.92 for a party. She spent $200.20 on food, plus an additional $30.18 for each hour of the party. How long was the party? Write an equation first!

Answer 1

Equation: 320.92=200.20+30.18x
Total spent at party = food purchase + 30.18 per hour (x)

Subtract 200.20 from both sides.
120.72=30.18x

Divide both sides by 30.18x to get the x alone.
4=x

Because x represented how many hours you were at the party, the answer is 4 hours.

Answer 2

4.006627

Explanation: