CPM Homework Help : CCA Problem A-32

Write an equation to solve the following problem. Write your answer with a complete sentence.

Susan is buying three different colors of tiles for her kitchen floor. She is buying $107$ red tiles, and three times as many navy blue tiles as beige tiles. If Susan buys $435$ tiles altogether, how many tiles of each color does she buy?

Let $b =$ the number of beige tiles. Your equation should start with “ $435 =$ ” and use $b$ as the only variable.

Step 1:

Choose a number for the amount of beige tiles.

Beige

Navy
$\left(3b\right)$

Red
$\left(107\right)$

Total
Tiles

Step 2:

Multiply the number of beige tiles by $3$ to get the number of navy-blue tiles.

Step 3:

Add the beige, red, and navy-blue tiles together to get the total number of tiles Susan bought.
Did your total come out to $435$ ? If not, try another number for the beige.