diff --git a/ch3_pull-request/Create-PullRequest.md b/ch3_pull-request/Create-PullRequest.md
index 3cd961b2..6050bef1 100644
--- a/ch3_pull-request/Create-PullRequest.md
+++ b/ch3_pull-request/Create-PullRequest.md
@@ -6,15 +6,16 @@ In Chapter 3 - _Teamwork and Collaborative Development_ we learn how to collabo
 
 2. Delete the following line:
 
-   __Delete this line__
 
 3. Add one or two lines here with a random text:
 
-   __...__
+   Add random text
+   a new line
+   Add another line
 
 4. Modify the following line by removing the letters that do not belong:
 
-   __---> The ccow jumpedd ovverr thhe mooon__
+   __---> The cow jumped over the moon__
 
 5. Commit your changes into a new _branch_:
 
diff --git a/ch3_pull-request/src/app.js b/ch3_pull-request/src/app.js
index d2b448d1..f45636c4 100644
--- a/ch3_pull-request/src/app.js
+++ b/ch3_pull-request/src/app.js
@@ -1,5 +1,15 @@
 function toRomanNumerals(num) {
-  return num;
+    var lookup = { M:1000,CM:900,D:500,CD:400,C:100,XC:90,L:50,XL:40,X:10,IX:9,V:5,IV:4,I:1 };
+    var roman = '';
+    var i;
+    for ( i in lookup ) {
+        while ( num >= lookup[i] ) {
+            roman += i;
+            num -= lookup[i];
+        }
+    }
+    return roman;
+
 }
 
 var numbers = [3,4,5,13,42,2021];