diff --git a/09-mostRepeatedChar/index.js b/09-mostRepeatedChar/index.js
index b113ed8..bedc121 100644
--- a/09-mostRepeatedChar/index.js
+++ b/09-mostRepeatedChar/index.js
@@ -1,4 +1,16 @@
 export function mostUsedChar(text) {
     // implementar logica aqui
-    return ""
+    const textObj = {}
+    let maxCount = 0
+    let mostUsedChar = ""
+    for (let char of text) {
+        textObj[char] = textObj[char] + 1 || 1
+    }
+    for (let key in textObj) {
+        if (textObj[key] > maxCount) {
+            maxCount = textObj[key]
+            mostUsedChar = key
+        }
+    }
+    return mostUsedChar
 }
\ No newline at end of file