### Home > AC > Chapter 2 > Lesson 2.1.8 > Problem 2-78

2-78.

Use Guess and Check to solve the problem below. Then state your solution in a sentence. *2-78 HW eTool* (Desmos).

Mairé is thinking of two numbers. When she adds them, she gets 40. When she multiplies them, she gets 351. Help her younger sister, Enya, figure out the numbers.

Use the Guess and Check table in the eTool below to solve.

Click the link at right for the full eTool version: *AC 2-78 HW eTool*