diff --git a/09-mostRepeatedChar/index.js b/09-mostRepeatedChar/index.js
index d288f02..ad0fa71 100644
--- a/09-mostRepeatedChar/index.js
+++ b/09-mostRepeatedChar/index.js
@@ -5,7 +5,7 @@ export function mostUsedChar(text) {
     let mostUsed = '';
     text.split('').forEach((letter) => {
         if (text.split(letter).length > maxLetter) {
-        maxLetter = text.split(letter).length - 1;
+        maxLetter = text.split(letter).length;
         mostUsed = letter;
         }
     })
diff --git a/10-longestWords/index.js b/10-longestWords/index.js
index a98d2d8..fb9d583 100644
--- a/10-longestWords/index.js
+++ b/10-longestWords/index.js
@@ -1,4 +1,13 @@
 export function longestWords(words) {
     // implementar logica aqui
-    
-}
\ No newline at end of file
+
+    return words.reduce((longest, sentence, i) => {
+        if (!i || longest[0].length < sentence.length) {
+           return [sentence];
+        }
+        if (longest[0].length === sentence.length) {
+           longest.push(sentence);
+        }
+        return longest;
+     }, []);
+  }
\ No newline at end of file