Reapply "Update 1.js"

This reverts commit ce5e2ad.

Author: djebsoft

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

@@ -1,8 +1,7 @@
 // Predict and explain first...
 
 // Why will an error occur when this program runs?
-// =============> because first: the variable decimalNumber is declared twice
-// second: the parameter decimalNumber is assigned to a value inside the function
+// =============> write your prediction here
 
 // Try playing computer with the example to work out what is going on
 
@@ -15,13 +14,7 @@ function convertToPercentage(decimalNumber) {
 
 console.log(decimalNumber);
 
-// =============> Identifier 'decimalNumber' has already been declared is the error msg thrown by the code
+// =============> write your explanation here
 
 // Finally, correct the code to fix the problem
-// =============> 
-function convertToPercentage(decimalNumber) {
-//  const decimalNumber = 0.5; this line must be deleted
-  const percentage = `${decimalNumber * 100}%`;
-
-  return percentage;
-}
+// =============> write your new code here