There are 52 pounds of apples in Mitch's supply.
To find out, you can set up a proportion:
14/10 = 38/x
Cross-multiplying:
14x = 380
Dividing both sides by 14:
x = 27.14
Since Mitch can't have a fraction of an apple, we round up to the nearest whole number:
x = 28
Therefore, if Mitch uses 10 pounds of apples and has used a total of 52 pounds, he must have started with:
52 - 10 = 42 pounds of apples.