Final answer:
To find the weight of the whole block of cheese, add the weight of two thirds to the weight of one third.
Step-by-step explanation:
To find the weight of the whole block of cheese, we need to determine the weight of one third of the block. Since two thirds of the block weighs 4 1/2 pounds, we can divide this weight by 2 to find the weight of one third: 4 1/2 divided by 2 is 2 1/4 pounds.
Now, to find the weight of the whole block, we can add the weight of two thirds (4 1/2 pounds) to the weight of one third (2 1/4 pounds): 4 1/2 + 2 1/4 = 6 3/4 pounds.
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