Answer: 1,234.70
Explanation:
The given amount of income = $12,347
To find : One tenth of an income of $12,347
To calculate one tenth of an income of $12,347, we need to divide $12,347 by 10 ,we get

On dividing a number by ten , we put decimal just before the first digit from the right.
Hence, One tenth of an income of $12,347 = 1,234.70