Question

If 653xy is divisible by 80 then find the value of x+y

Answer 1

Answer:

80=2*5*8

Since 653xy is divisible by 2 & 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 see attachment