Answer:
46 hours and 55 minutes
Explanation:
If 57 minutes is required for 1 pair, to find how much time it will take to sew 49 pairs we simply multiply 57 by 49
After you do that you will be left with 2,793 minutes.
Since 60 minutes make an hour we divide the answer by 60.
2,793 ÷ 60 = 46 hours and 55 minutes.
I really hope this helps.