Data Sufficiency

I would appreciate an explanation
I'll post the OA after a few responses

Sorry, I had trouble attaching the question.

Here it is typed:
A bookstore that sells books sells each of its paperbacks for a certain price and each of its hardcover books for a certain price. If Joe, Maria, and Paul bought books in this store, how much did Maria for 1 paperback and hardcover book?

1. Joe bought 2 paperback and 3 hardcover books for $12.50
2. Paul bought 4 paperback and 6 hardcover books for $25.00

IMO E.

Statement 1: Can be represented in an equation as 2P+3H=12.5. 2 variables & 1 equation, so not sufficient

Statement 2: Can be represented in an equation as 4P+6H=25 ==> 2P+3H=12.5. 2 variables & 1 equation, so not sufficient

Together also the statements are not sufficient because they both represent the same equation.

Definitely E
Previous explanation by Vemuri is very good )

Vemuri wrote:IMO E.

Statement 1: Can be represented in an equation as 2P+3H=12.5. 2 variables & 1 equation, so not sufficient

Statement 2: Can be represented in an equation as 4P+6H=25 ==> 2P+3H=12.5. 2 variables & 1 equation, so not sufficient

Together also the statements are not sufficient because they both represent the same equation.

Thank you, Vemuri!
I made such a silly mistake. I thought that we'd be able to set up a second equation P+H=5 and find out the values of P and H, but I did read the question carefully: we need to find the price of P and H books,not the amounts.