Answer:
Times it by 40. That is the pattern.
For the 8 inch pie you are paying about 55 cents per inch
for the 10 inch pie you are paying about 61 cents per inch
so the 8 inch pie is a better deal
hope this helped
oh and to get those numbers divide 4.39 by 8 and 6.15 by 10
1.666666666666667 to be exact, but rounded it is 1.66
