Final answer:
To determine the number of 19 oz cans in a case weighing 20 pounds and additional ounces, convert the total weight of the case to ounces (20 pounds times 16 oz/pound = 320 ounces), add any extra ounces, then divide by 19 ounces per can.
Step-by-step explanation:
The question is asking to find out how many 19 oz cans are in a case that weighs 20 pounds and some additional ounces. To answer this, we have to first convert the total weight of the case from pounds to ounces, because the weight of individual cans is given in ounces. We know that 1 pound = 16 ounces. So, we calculate the total weight of the case in ounces and then divide it by the weight of one can.
First, let's convert pounds to ounces: 20 pounds times 16 ounces per pound equals 320 ounces.
If the case weighs an additional amount of ounces, add that to the 320 ounces. Then, divide the total weight of the case in ounces by 19 ounces (the weight of one can) to find out the number of cans in the case.