Question

A number n is divided by 9 is 3. What is the remainder when 3n + 5 is divided by 9?

Answer 1

9.55555555.......

Explanation:

n is 27 because 27÷9=3. 3n is 81 because 27×3=81. 81+5=86 and 86÷9 is 9.55555555555.....

Answer 2

5

Explanation:

A number n is divided by 9 is 3

• n/9 = 3

• n = 3*9 = 27

Find the remainder when 3n + 5 is divided by 9.

• 3n + 5 = 3*27 + 5 = 9*9 + 5

As we see the resultant number, when divided by 9 will leave a remainder of 5

So the answer is 5.