when the positive integer y is divided by 9 , the remainder is 5 . what is the remainder when 3 y is divided by 9 ?
lets take the number as y when y is divided by 9 the remainder is 5 hence y can be written as y = 9 k + 5 multiplying by 3 will give 3 y = 27 k + 15 we can also write 3 y = 27 k + 9 + 6 now 27 k and 9 are divisible by 9 leaving the remainder as 6 hence e is the answer .
reminder(multiply(add(9, 5), 3), 9)