If and are the two digits of the number 653 such that this number is

1.	If and are the two digits of the number 653 such that this number is divisible by 80, then + = ?
Answer» 80 = 2 x 5 x 8 Since 653xy is divisible by 2 and 5 both, so y = 0. Now, 653x is divisible by 8, so 13x should be divisible by 8. This happens when x = 6. x + y = (6 + 0) = 6.

Discussion