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 = 251.50h 0.50p = 26.50

H + p  = 25
1.50 h + 0,50 p = 26.50

p = 25 - h
1.50 h + 0.50 ( 25 - h ) = 26.50
1,50 h + 12.50 - 0.50 h = 26.50
h = 26.50 - 12.50 
h = 14
p = 25 - 14
p = 11
Gillian purchased 14 hardcover books and 11 paperback books.

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