CPM Homework Help : CC3 Problem 1-60

Define a variable and then write and solve an equation for the problem below. Remember that you can use the $5$ -D Process (described in the Lesson 1.1.3 Math Notes box) to help you get started. State your solution in a sentence.

Todd is $10$ years older than Jamal. The sum of their ages is $64$ . How old are Todd and Jamal?

Describe/Draw:

Rewrite the word problem as an equation or system of equations.

Hint 1:

Have Jamal's age be $x$ . Write Todd's age in terms of $x$ .

Define:

1 row of 2 columns, labeled from left to right, as follows: Jamal's age, x, Todd's age, x + 10.

Do:

Third column added, labeled, x + (x+10) = 64.

Decide:

Fourth column added, labeled, 64?

Hint 2:

Make a guess for Jamal's age. Was your answer too high or too low? Try again using a larger or smaller number as appropriate.