How many paperback books did gillian buy?
11
gillian purchased 25 books at the library book sale. each
hardcover book cost $1.50, and each paperback book cost
$0.50. gillian spent a total of $26.50. the book costs can be
represented by the system of equations below.
h+ p = 25
1.50h +0.50p = 26.50
12
13

Gillian purchased 14 hardcover books and 11 paperback books.

Step-by-step explanation:

Gillian purchased 25 books at the library book sale.  

If Gillian purchased h hardcover and p paperback books, then  

h + p = 25 (1)

Each hardcover book costs $1.50, and each paperback book costs $0.50. Gillian spent a total of $26.50.  

Hence, we can write  

1.5h + 0.5p = 26.50 (2)

⇒ 3h + p = 53 (3)

Now, solving equations (1) and (3) we get,

3h - h = 53 - 25

⇒ 2h = 28

⇒ h = 14  

Hence, from equation (1) we get, p = 25 - h = 25 - 14 = 11

Therefore, Gillian purchased 14 hardcover books and 11 paperback books. (Answer)

11 - A

Step-by-step explanation:

took the test on edu

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step-by-step explanation: