Answer: 2 boxes
Step-by-step explanation:
To find out how many boxes of cookies Qiang should get, we need to calculate the total number of cookies needed for all the friends.Since each friend wants 4 cookies and there are 4 friends, the total number of cookies needed is:
Total cookies needed = 4 friends * 4 cookies per friend
Total cookies needed = 16 cookies
Now, we know that each box has 10 cookies.
To determine how many boxes Qiang should get, we divide the total number of cookies needed by the number of cookies in each box:
Number of boxes = Total cookies needed / Cookies per box
Number of boxes = 16 cookies / 10 cookies per box
Number of boxes = 1.6
Since we can't have a fraction of a box, Qiang should get 2 boxes of cookies to have enough for all 4 friends (10 cookies from each box, totaling 20 cookies). There will be some cookies left over, but it ensures there are enough for each friend to get 4 cookies.