First way is to first find the sum and then find 37% of it. Second way is another way round, find 37 of 27 3/5 and 37% of 15.9 and then add it.
Lets do it
37%=0.37
\(0.37*(27 \frac{3}{5} +15.9)=0.37*(43.5)=16.095\) - its the result
Second way its
0.37 27 3/5 + 0.3715.9=10.212 + 5.888=16.095