In the given question, all the information's that are required is already provided. based on these information's the correct answer can be easily deduced. The McIntosh family picked a total of 115 apples. the family ate a total of 8 apples per day. It is required to find the day after which there will be 19 apples left from the total of 115. Then firstly let us subtract 19 apples from the total of 115.
Number of apples left after deducting 19 apples = 115 - 19
= 96
Now
8 apples are eaten by the McIntosh family in = 1 day
96 apples will be eaten by the McIntosh family in = 96/8
= 12 days
So after 12 days, 19 apples will be left with the McIntosh family.