Answer:
The truck can deliver up to 209 boxes without exceeding a mass of 4700.
Explanation:
To solve this problem, we need to use the formula:

We know that each box weighs 22.5, so the formula becomes:

We want to find the maximum number of boxes that the truck can deliver without exceeding a mass of 4700. So we set up an inequality:

To solve for number of boxes, we isolate it by dividing both sides by 22.5:


Since we can't have a fraction of a box, we round down to the nearest integer:

Therefore, the truck can deliver up to 209 boxes without exceeding a mass of 4700.