diff --git a/src/books.js b/src/books.js
index c8119bb..2313fbf 100644
--- a/src/books.js
+++ b/src/books.js
@@ -38,30 +38,83 @@
 
 
 // Your code here:
-const booksArray = [];
+const booksArray = [
+  {
+  title: "The Old Man and the Sea" ,
+  pages: 128 ,
+   author: "Ernest Hemingway",
+   details: {
+     language: "English",
+     description: "One of Hemingway's most famous works, it tells the story of Santiago.."
+   } },
+   {
+    title: "The Airbnb Story",
+    pages: 256,
+    author: "Leight Gallagher",
+    details: {
+       language: "English",
+       description: "This is the remarkable behind-the-scenes story of the creation and growth of Airbnb..."
+    }},
+    {
+     title: "Educated - A Memoir",
+     pages: 352,
+     author: "Tara Westover",
+     details: {
+        language: "English",
+        description: "Educated is an account of the struggle for self-invention..."
+    }},
+    {
+     title: "The Art of Learning",
+     pages: 288,
+     author: "Josh Waitzkin",
+     details: {
+        language: "English",
+        description: "The Art of Learning takes readers through Waitzkin's unique journey to excellence. He explains in clear detail how a well-thought-out, principled approach to learning is what separates success from failure."
+     }}];
 
 
 
 
 // Iteration 2 | Book Details
-function getBookDetails() {
+function getBookDetails(bookdetails) {
   // Your code here:
-
-}
-
+  
+  
+   const bookName=bookdetails.title;
+   const writer =bookdetails.author;
+   const numPage = bookdetails.pages;
+   
+   const valueIs = `${bookName} - ${writer} - ${numPage} pages`;
+   // console.log(valueIs);
+  return valueIs;
+  }
+  const book = { title: "The Old Man and the Sea" ,
+    pages: 128 ,
+     author: "Ernest Hemingway",
+     details: {
+       language: "English",
+       description: "One of Hemingway's most famous works, it tells the story of Santiago.."}
+     }
+       console.log(getBookDetails(book))
 
 
 // Iteration 3 | Delete Language
 // Your code here:
 
+for(let i=0; i<booksArray.length; i++){
+  delete booksArray[i].details.language;
+}
+
 
+console.log(booksArray);
 
 
 // Iteration 4 | Estimated Reading Time
 // Your code here:
+for(let i=0; i<booksArray.length; i++){
 
-
-
+booksArray[i].readingTime = Math.ceil((booksArray[i].pages *500)/90);
+}
 
 // Bonus: Iteration 5 | Books Dictionary
 
@@ -86,15 +139,43 @@ const dictionary = {
     ],
 };
 
-function booksByAuthor() {
+function booksByAuthor(dictionary1) {
   // Your code here:
+    let result = [];
+   
+  const listOfKeys= Object.keys(dictionary1);
+  
+ listOfKeys.forEach(function (nameOfAuthor){
+                    console.log(dictionary1[nameOfAuthor].length);
+  
+   
+  for(let i=0; i< dictionary1[nameOfAuthor].length;i++){
+     let newObject={};
+newObject.title = dictionary1[nameOfAuthor][i][0];
+newObject.pages = dictionary1[nameOfAuthor][i][1];
+ newObject.author =nameOfAuthor;
+   
+ result.push(newObject);
+  }
+ });
   
+  return  result ;
 }
+console.log(booksByAuthor(dictionary));
+
 
 
 
 // Bonus: Iteration 6 | Average Page Count
-function averagePageCount() {
+function averagePageCount(books) {
   // Your code here:
   
-}
+
+    let sum=0;
+  for(let i=0; i<books.length; i++){
+    sum += books[i].pages;
+   
+  }
+  return sum/books.length;
+  }
+  console.log(averagePageCount(booksArray));