Question

gillian purchased 25 books at the library book sale. each hardcover book costs $1.50, and each paperback book costs $0.50. gillian spent a total of $26.50. the book costs can be represented by the given system of equations.
$h + p = 25$
$1.50h + 0.50p = 26.50$
how many paperback books did gillian buy?
14
11
12
13

Explanation:

Step1: Solve for \( h \) from the first equation

From \( h + p = 25 \), we get \( h = 25 - p \).

Step2: Substitute \( h \) into the second equation

Substitute \( h = 25 - p \) into \( 1.50h + 0.50p = 26.50 \):

$$
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Answer:

11