Step-by-step explanation:

According to the previous question,

the farmer has 1684 acres of land

It takes 45 minutes for the farmer to plough 1 acre of the land.

Total time taken to plough his land = time taken to plough one acre * total acres of land he has

= 45 * 1684 = 75780 minutes

or 1263 hours

or 52 days 15 hours