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

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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.

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

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