CPM Homework Help : AC Problem 1-65

Solve the problem below using Guess and Check. State your solution in a sentence.

The perimeter of a triangle is $76$ centimeters. The second side is twice as long as the first side. The third side is four centimeters shorter than the second side. How long is each side?

Hint:

Make $4$ columns: one for the $1$ st side, one for the $2$ nd side, one for the $3$ rd side, and one for the total.

More Help 1:

Read the problem again and notice the information you are given about each side.

More Help 2:

Use a guess of $10$ for the first side, compute the other sides, and check if the total is correct. If not, try another guess.