Jai has thick poster paper that he uses to make signs for the lemonade stand. Each of the sheets of poster paper measures 3/8 - inch thick. The height of Jai's stack of poster paper measures a total of 2 1/4 inches. Write an algebraic equation that could be used to determine the number of sheets of poster paper, p, that Jai has in his stack. Explain how the model of the ruler could be used to determine the number of sheets of poster paper Jai has in his stack. How many sheets of paper does Jai have?
You could say 2 1/4 = 3/8p
2 1/4 is the total height of the stack, which is equal to 3/8 (thickness of each piece of paper) multiplied by p (placeholder for the total pieces of paper).
By solving for p, we are solving for the number of pieces of paper that will give us a stacked height of 2 1/4 inches.
We can solve this equation by dividing both sides by 3/8, giving us p = 6
Hope this helps!