Final answer:
Jack can stuff 12 envelopes per minute and needs to stuff a total of 1,000 envelopes. After deducting the 112 envelopes already stuffed, he has 888 left. It will take him 74 minutes to complete the task.
Step-by-step explanation:
Jack is working on stuffing coupons into envelopes. Given that Jack can stuff 12 envelopes per minute and already has 112 envelopes stuffed, he must stuff a total of 1,000 envelopes. To calculate the time it will take for Jack to complete the task, we first need to determine how many more envelopes he needs to stuff. Subtract the number of envelopes already stuffed (112) from the total number (1,000) to get the number of envelopes left to stuff, which is 888.
Now, we divide the envelopes left to stuff by Jack's stuffing rate:
888 envelopes ÷ 12 envelopes/minute = 74 minutes.
Therefore, it will take Jack 74 minutes to complete stuffing the remaining envelopes.