Question

54x49y is divisible by 90 then what is the value of y by x

Answer 1

Well, the given number is divisible by 90, so that number is also divisible by 10, since 90 is divisible by 10.

Since the number is a multiple of 10, its unit digit must be 0, i.e.,

y = 0

Hence,

y / x = 0

because zero divided by any non-zero number is 0.

But wait, let's check x ≠ 0.

We have y = 0. Since the number is divisible by 90, it's also divisible by 9, since 9 | 90, i.e., the sum of its digits is divisible by 9.

So,

5 + 4 + x + 4 + 9 = 22 + x

Since 22 is not a multiple of 9, x ≠ 0.

Hence the answer is 0.