Question 1199605
<br>
You have received two responses, both showing a typical solution using two variables, and setting up the problem using the information exactly as given.<br>
Both solution methods are fine; however, the amount of work required to reach the final answer can be a lot less if you take the time to analyze the given information and set up the problem for solving using a single variable.<br>
Here is how I would set up and solve the problem.<r>
let x = Ben's age 2 years ago
then 3x = Anna's age 2 years ago<br>
The sum of their ages now is 40:<br>
(x+2)+(3x+2) = 40
4x+4 = 40
4x = 36
x = 9<br>
ANSWER: Anna's age is 3x+2 = 29<br>