Question

Alana and Petra go to a used book sale, where every book is the same price. Alana buys 4 books and Petra buys 2 books. They run into their friend Angus, who really loves to read, and discover that he has bought 16 books. Angus received a $15 discount, but he still spent $5 more than Alana and Petra combined. How much does one book cost?

Answer 1

each book is 2 dollars

Explanation:

x=price per book

angus=16x-15

16x-15-5=4x+2x

=16x-20=6x

=-20=-10x

2=x

tadaa!!

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