Question

Let $d$ be a positive number such that when $109$ is divided by $d$, the remainder is $4.$ Compute the sum of all possible two-digit values of $d$.

Answer 1

71

Explanation:

hi this i correct the other answer is wrong

Answer 2

(109 - 4)/d = n; where n is a two-digit number
105/3 = 35
105/5 = 21
105/7 = 15

The sum all two-digit values are: 3 + 5 = 8
2 + 1 = 3
1 + 5 = 6