Answer:
cost of apples = 1.25 per pound
Step-by-step explanation:
from the question 10 pound box of apple costs 12.5.
ratio is a comparison of two variables and is usually done by division.
ratio of cost to number of pound will be 
breaking down the denominator to 1, divide both numerator ad denominator by 10.
ratio of cost to number of pound will be 
this can be written as 1.25 per pound or 1.25/pound
Hence the cost of apples per pound will be 1.25