Barbata invests $2600 in the National Bank at 5%. How much additional money must she invest at 8% so that the total annual income will be equal to 6% of her entire investment?	Pick one: A) 1200 B) 3000 C) 1300 D) 3600 E) 2400
Let the additional invested amount for 8% interest be x;   Equation will be;   2600+0.05*2600+x+0.08x = 2600+x+0.06(2600+x)   0.05*2600+0.08x = 0.06x+0.06*2600   0.02x = 2600(0.06-0.05)   x = 2600*0.01/0.02= 
<gadget id="calculator">2600*0.01/0.02</gadget>
<output>1_300</output>
1300   Ans: "1300"
<result>C</result>
Barbata invests $2600 in the National Bank at 5%. How much additional money must she invest at 8% so that the total annual income will be equal to 6% of her entire investment?