question answered and code rewritten

Author: AdnaanA

Sprint-2/1-key-errors/1.js

@@ -2,9 +2,12 @@
 
 // Why will an error occur when this program runs?
 // =============> write your prediction here
+// the code will throw an error because the variable str is being declared twice within the same scope
 
 // Try playing computer with the example to work out what is going on
 
+/*
+
 function convertToPercentage(decimalNumber) {
   const decimalNumber = 0.5;
   const percentage = `${decimalNumber * 100}%`;
@@ -14,7 +17,23 @@ function convertToPercentage(decimalNumber) {
 
 console.log(decimalNumber);
 
+*/
+
 // =============> write your explanation here
+/* The error occurs because the variable 'decimalNumber' is declared twice within the same function scope using 'const'. 
+This is not allowed in JavaScript, as each variable must have a unique name within its scope. When the function is called, 
+the JavaScript engine encounters the second declaration of 'decimalNumber' and throws a SyntaxError indicating that the 
+identifier has already been declared.*/
 
 // Finally, correct the code to fix the problem
 // =============> write your new code here
+
+let decimalNumber = 0.6;
+
+function convertToPercentage(decimalNumber) {
+  const percentage = `${decimalNumber * 100}%`;
+
+  return percentage;
+}
+
+console.log(convertToPercentage(decimalNumber));