You first need to convert the fractions so they are both eighths.
1 3/4 = 1 6/8
Then you simply need to add:
1 6/7 + 3 3/8 = 4 9/8 = 5 1/8
Your answer is 5 1/8.
After calculating the stock and savings account total I found out that the difference in earning between them is $104.738.
