Final answer:
We need more details to calculate the exact number of bags David requires; the process involves dividing the total quantity needed by the capacity of one bag and rounding up to the nearest whole number, as incomplete bags cannot be purchased.
Step-by-step explanation:
To determine how many bags David will need to purchase, we need additional information about the quantity of the contents that he requires and the capacity of each bag. Without this information, it is not possible to provide an accurate answer. However, I can explain the process that David should use to figure out the number of bags:
- David should find out the total quantity of material he needs.
- He should then determine the capacity of one bag (how much one bag can hold).
- Next, he divides the total quantity of material by the capacity of one bag to find out the number of bags he needs.
- Since David cannot purchase part of a bag, if he ends up with a fractional result from the division, he will need to round up to the nearest whole number.
This method will provide David with the exact number of bags he must purchase, ensuring he has enough material for his needs without buying unnecessary extra bags.