Fix syntax error in priceAfterOneYear assignment and enhance comments for clarity

Author: MohammedNaru

Sprint-1/3-mandatory-interpret/1-percentage-change.js

@@ -2,21 +2,24 @@ let carPrice = "10,000";
 let priceAfterOneYear = "8,543";
 
 carPrice = Number(carPrice.replaceAll(",", ""));
-priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
+priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
 
 const priceDifference = carPrice - priceAfterOneYear;
 const percentageChange = (priceDifference / carPrice) * 100;
 
 console.log(`The percentage change is ${percentageChange}`);
 
-// Read the code and then answer the questions below
-
 // a) How many function calls are there in this file? Write down all the lines where a function call is made
+// There are five function calls: carPrice.replaceAll(",", ""), Number(carPrice.replaceAll(",", "")), priceAfterOneYear.replaceAll(",", ""), Number(priceAfterOneYear.replaceAll(",", "")), and console.log(...).
 
 // b) Run the code and identify the line where the error is coming from - why is this error occurring? How can you fix this problem?
+// The error comes from the line priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," "")); because there is a missing comma between the arguments in replaceAll, which causes a syntax error. It can be fixed by writing replaceAll(",", "") instead.
 
 // c) Identify all the lines that are variable reassignment statements
+// The variable reassignment statements are carPrice = Number(carPrice.replaceAll(",", "")); and priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));.
 
 // d) Identify all the lines that are variable declarations
+// The variable declarations are let carPrice = "10,000";, let priceAfterOneYear = "8,543";, const priceDifference = carPrice - priceAfterOneYear;, and const percentageChange = (priceDifference / carPrice) * 100;.
 
-// e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+// e) Describe what the expression Number(carPrice.replaceAll(",", "")) is doing - what is the purpose of this expression?
+// The expression first removes the comma from the string "10,000" using replaceAll(",", ""), resulting in "10000", and then converts that string into a number using Number(), so that it can be used in mathematical calculations.