Final answer:
By setting up an addition equation and solving it, we find that the pallet of envelopes weighs 155 pounds, which is option B.
Step-by-step explanation:
The student asks about writing and solving an addition equation to determine the weight of a pallet of envelopes based on the weight of a pallet of labels. We are told that a pallet of labels weighs 240 pounds and is 85 pounds heavier than a pallet of envelopes.
To solve this, we can set up the following equation to find the weight of the pallet of envelopes (E):
E + 85 = 240
Now, we subtract 85 pounds from both sides of the equation to find the weight of the pallet of envelopes:
E = 240 - 85
E = 155 pounds
So, the weight of the pallet of envelopes is 155 pounds, which corresponds to option B.