The difference between the 38% of a number and 22% of that number is 3200. What is the $15\frac{1}{2}\%$ of that number?

3100 3200 3000 2800

3100

Let number = 100x According to the question , 38% of 100x - 22% of 100x= 3200 16x = 3200 100x = 20,000 Now,  $15\frac{1}{2}\%$  of 20,000 = 20,000 × \(\frac{31}{200}\) = 3100