5 and 5/10s sounds like 5.5 so I'd do 5.5+0.02=5.52
Answer:
I believe the answer is B sorry if I'm wrong
4.17
Step by step : I don’t know if it’s right but I did $6000 x 3 cause he did it for 3 year and then it came up to $18,000 then I did what is the percentage of 750$ in $18,000 and got 4.17