Complete percentage-change interpret exercise

Author: salahalsabhi

Sprint-2/3-mandatory-interpret/1-percentage-change.js

@@ -2,21 +2,35 @@ 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}`);
+console.log(`The price difference is ${priceDifference}`);
+
+
+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
+// Answer: 6 function calls.
 
 // 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?
+// Answer: line 5 {replaceAll(",", ""))} added , to fix the SyntaxError.
 
 // c) Identify all the lines that are variable reassignment statements
+// Answer: carPrice = Number(carPrice.replaceAll(",", "")); line 4
+//         priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", "")); line 5
 
 // d) Identify all the lines that are variable declarations
+// Answer: let carPrice = "10,000"; line1
+//         let priceAfterOneYear = "8,543"; line 2
+//         const priceDifference = carPrice - priceAfterOneYear; line 7
+//         const percentageChange = (priceDifference / carPrice) * 100; line 8
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+// Answer: carPrice.replaceAll(",","") remove commas from the string.
+//         Number(...) changes the text to a number so subtraction and division work correctly.
+