Question

If x and y are the two digits the number 653xy such that this number is divisible by 80, then x+y is equal to:​

Answer 1

Answer:

Since 653xy is divisible by 5 as well as 2, so y = 0.

Since 653xy is divisible by 5 as well as 2, so y = 0.Now, 653x0 must be divisible by 8.

Since 653xy is divisible by 5 as well as 2, so y = 0.Now, 653x0 must be divisible by 8.So, 3x0 must be divisible by 8. This happens when x = 2

Since 653xy is divisible by 5 as well as 2, so y = 0.Now, 653x0 must be divisible by 8.So, 3x0 must be divisible by 8. This happens when x = 2x + y = (2 + 0) = 2.