please need help to answer all of the questions.

Problem 3: [20 minutes, 15 marks] Campus Books (CB) is a retail store that purchases textbooks from publishers, and then sells these textbooks to students on campus for use in their registered classes. - On August 1th, CB placed an order with McGraw-Hill to purchase 100 accounting textbooks at a per unit cost of $50 each, under terms 3/10,n/30. - On August 20th, CB placed an order with Wiley to purchase 70 finance textbooks at a per unit cost of $45 each, under terms 2/10,n/30. - CB received the accounting textbooks on September 1ts while the finance textbooks arrived September 3rd. - On September 4th, CB returned 10 of the accounting textbooks to the publisher as they did not come with the Connect access code attached to the book. - On September 5th, CB complained to Wiley about the condition of the finance textbooks, as some of them were damaged slightly during shipping. Wiley granted CB an allowance of $280. - On September 6th, CB paid McGraw-Hill for the amount owing on the accounting textbooks. - On September 7th, CB sold 76 of the accounting textbooks for $110 each and 50 - of the finance textbooks for $100 each. All sales were made to students and were paid with either cash or credit card. - On September 8th,16 accounting textbooks were returned by students to CB, as 9 the students had decided after the first week of classes, accounting was not for them, and luckily they hadn't taken the textbook out of its packaging yet. - On September 1th,CB paid Wiley for the amount owing on the finance textbooks. Required: 1. Prepare journal entries for CB to record the business transactions described above. [12 marks] 2. Calculate the gross profit on the sales of the accounting textbooks and the gross profit the finance textbooks. [2 marks] 3. What is the cost of the remaining accounting textbooks on hand for CB after all of the transactions are accounted for? [1 mark]