### Home > AC > Chapter 9 > Lesson 9.2.1 > Problem 9-30

9-30.

Solve the problem below by writing and solving one or two equations. A Guess and Check table may help you get started. Be sure to define your variable(s) and write your solution as a sentence.

Rowan received

Define your variables.

# of correct answers on Part 1

*# of correct answers on Part 2*

Write a set of equations representing the problem.

Solve the second equation for .

Substitute .

Solve for .

Substitute .

Solve for .