Question

Cam bought some used books for $4.95. He paid $0.50 each for some books and $0.35 each for the others. He bought fewer than 8 books at each price. How many books did Cam buy? SHOW/TYPE WORK

Answer 1

4.95 is how much he paid so you cannot go past that number
he bought 7 books at .35 cents, he spent 2.45 on that [ 7 x 0.35 ]
he bought 5 books at .50 cents , he spent 2.50 on that [ 5 x .50 ] 
2.45 plus 2.50 = 4.95 
7 plus 5 = 12
He bought 12 total books