He then went to see the oranges being harvested. He found out that the harvest will go on for 3 days. How many sacks do they harvest per day if they harvested a total of 27 sacks of oranges?
1. He went to see the oranges being harvested. 
2. He found out that the harvest will go on for 3 days. 
3. How many sacks do they harvest per day if they harvested a total of 27 sacks of oranges?

We are trying to find out how many sacks of oranges are harvested per day. We are given that the total number of sacks harvested is 27, and that the harvest will go on for 3 days. 

We can set up an equation to solve this problem: 

x = number of sacks harvested per day 
3x = total number of sacks harvested 

We know that 3x = 27, so we can solve for x: 

3x = 27 
x = 9 

This means that 9 sacks of oranges are harvested per day.