Question

If x and y are the two digits of the number 653xy such that this number is divisible by 80, then x + y = ?

Answer 1

6

Explanation:

653xy divisible by 80

y = 0

816 x 80 = 65280

817 x 80 = 65360

818 x 80 = 65400

x = 6

x + y = 6 + 0 = 6