diff --git a/js/app.js b/js/app.js
index 1ff8cc0..1375338 100644
--- a/js/app.js
+++ b/js/app.js
@@ -9,11 +9,14 @@ Test this function by hand in the console to get it working, and when you think
 
 // Write your code here
 function sum(a, b) { //eslint-disable-line
+  let mysum = a + b;
+  let mystr =`The sum of ${a} and ${b} is ${mysum}.`;
 
+  return [mysum, mystr];
 }
 
 // Here is the test for sum(); uncomment it to run it
-// testSum(4, 7);
+testSum(4, 7);
 
 // Once you get the test passing, do an a-c-p cycle and synchronize the code between GitHub and your laptop. Don't forget to create a new branch for your work on the next question!