### Home > CC4 > Chapter 7 > Lesson 7.1.2 > Problem 7-23

7-23.

Nina has some nickels and 9 pennies in her pocket. Her friend, Maurice, has twice as many nickels as Nina. Together, their coins are worth 84¢. How many nickels does Nina have? Show all of your work and label your answers. Homework Help ✎

Let *n* represent the number of nickles

5*n* + 9 = Nina's money (nickles are worth 5 cents so multiply *n* by 5).

2(5*n*) = Maurice's money.

Set up an equation. Nina's money + Maurice's money = 84 cents. So, 5*n* + 9 + 10*n* = 84

Nina has five nickels.