diff --git a/09-mostRepeatedChar/index.js b/09-mostRepeatedChar/index.js
index b113ed8..e7d6fdf 100644
--- a/09-mostRepeatedChar/index.js
+++ b/09-mostRepeatedChar/index.js
@@ -1,4 +1,19 @@
 export function mostUsedChar(text) {
     // implementar logica aqui
-    return ""
-}
\ No newline at end of file
+    let result = '';
+            let mostUsedCount = 0;
+            for (const letter of text) {
+                let countLetter = 0;
+                for (const letterToCount of text) {
+                    if (letterToCount === letter) {
+                        countLetter++;
+                    }
+                }
+                if (countLetter > mostUsedCount) {
+                    mostUsedCount = countLetter;
+                    result = letter;
+                }
+            }
+           
+            return result;
+        }
\ No newline at end of file