CPM Homework Help : CCAA8 Problem 4-26

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

Step 1:

Let $n$ represent the number of nickels

Step 2:

$5n+9=$ Nina's money (nickels are worth $5$ cents so multiply $n$ by $5$ ).
$2(5n)=$ Maurice's money.

Step 3:

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

Answer:

Nina has five nickels.