Answer:
The answer is 28.19.
Explanation:
In order to determine the answer, we have to know about mixed numbers.
A mixed number is formed by two numbers:
The rule to transform a mixed number into a rational number is the next:
Given
a mixed number:

So, in this case:
A=28
c=19
d=100
Replacing this values in the expression:

Finally, the equivalent expression is 28.19.