Abest-seller novel sells for $28 in hardback edition and $12 in a paperback edition. a book store's sales of both editions totaled $1,356. if 65 copies of this novel were sold, how many hardback edition were sold

The number of each type of book is what is unknown, so we can represent those quantities with variables. Let x = the number of hardbacks and y = the number of paperbacks. Then we know that: x + y = 65 (the total number of books sold) We also know the total cost of both editions, which is $1356. It can be written algebraically as: 28x + 12y = 1356 We now have a system of two equations, which can be solved by substitution. It would be easier to solve the first equation for either x or y and substitute that into the second equation. 

Hi! so let’s say you buy two cds that’s a total of 20$ & two books , which is 12$, giving you the sum of 32$ , i would write it as ; c2+b2=32hope this : ) good luck!

Acapitalist economy is when all goods are owned by the government or private industries.