Alana and Petra bought 9 books combined.
Angus bought 19 books and had a $10 discount.
Angus spent $5 more than Alana and Petra combined.
This means that the price of 19 books is $15 more than the price of 9 books. 19 books is 10 books more than 9 books.
Giving you 10 books = $15, 1 book = $1.50
The width time the leg times to dimensions
The best option here is option B.
The correct answer would be 2.7 centimeters. Hope this was helpful, and if so, please give Brainliest. (: