Respuesta :
Answer:
$30
Step-by-step explanation:
We know that the cost of all of the books was 228 - 18 = 210 dollars because Mike had 18 dollars left over. Assuming that each book cost the same amount, we know that each book costs 210 / 7 = $30.
Answer:
$30
Step-by-step explanation:
Total amount Mike had = $228
Amount remaining = $ 18
Amount spent on books = 228 - 18 = $210
Cost of wach book = 210/7 = $30
Cost of each book is 30 dollars.