Answer: B. 72%
Explanation:
In the given circle graph, an electrical contracting company divides its monthly income.
From the given circle graph, the percent of the contractor's income is spent on personal salary = 47%
The percent of the contractor's income is spent on Helper's salary = 25%
Then , the percent of the contractor's income is spent on salaries :

Hence, 72% of the contractor's income is spent on salaries.