Question: A person earns 15% on investment but loses 10% on another investment. If the ratio of the two investments be 3:5, what is the gain or loss on the two investments taken together?

 Option A: 0.63 %

 Option B: 0.64 %

 Option C: 0.65 %

 Option D: 0.66 %

 Option E: None
Option A