First, you have to know how many total there are for each. In total, there are 13 books and 8 magazines. We also need to know how much all of these cost. So, you multiply 13 by 12 to find the total cost of the books. 13 books times 12 dollarseach is <u>$156</u>. Now, we do the same for the magazines. 8 magazines times 5 dollars each is <u>$40</u>. To find how much she spent in all, you have to add the two numbers.
