Question

Adding 7/8 to how much will add up to 1?​

Answer 1

Adding 8 to 7 results in a sum of digits of 6, and so on down to adding 8 to 1 which gives 9.

Answer 2

Answer:

Adding 8 to 7 results in a sum of digits of 6, and so on down to adding 8 to 1 which gives 9.