Answer:
43 cents
Explanation:
Comment
This question requires that you round up no matter what the remainder is. If you round down following the rounding rules, you will not have enough buttons.
Part A
Givens
Total = 38 buttons
Number of buttons in a package = 8
Solution
Packages = 38 / 8 = 4.75
You must round up so she will need 5 packages.
Part B
She had to buy 40 buttons from 5 packages.
1 package contains 8 button
The cost of 8 buttons is 3.44
The cost of 1 button 3.44/8 = .43 dollars or 43 cents