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?  Choices.
A) 0.63 %	B) 0.64 %	C) 0.65 %	D) 0.66 %	E) None
Sol.   Suppose he invested 300 &amp; 500 respectively profit : 15% of 300 = 45 loss =   500 *10 = 50 net loss = - 5 5/800 *100 = 0.63 %   0.63 %nswer 0.63 %
<result>A</result>
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?