What does the check digit need to be so that the following UPC 48900003782-D

will be valid?

a. 0

b. 7

c. 5

d. 2

c. 5

Step-by-step explanation:

Counting the check digit, there are 12 digits, so this is a GTIN-12 code. Alternate digits are multiplied by 3 and the result summed with the sum of the other digits. The check digit is the amount required to make this sum be a multiple of 10.

(4 + 9 + 0 + 0 + 7 + 2) ·3 + (8 + 0 + 0 + 3 + 8) = 66+19 = 85

The check digit is 5, the number that must be added to this to make the total 90, a multiple of 10.