In one alloy there is 10% chromium while in another alloy it is 8%. 15 kg of the first alloy was melted together with 35 kg of the second one to form a third alloy. Find the percentage of chromium in the new alloy. Choose the correct choice from the following choices.
A) 9.0%  B) 9.4%  C) 9.2%  D) 8.8%  E) 8.6%
The amount of chromium in the new 15+35= 
<gadget id="calculator">15+35</gadget>
<output>50</output>
50 kg alloy is  0.10*15+0.08*35= 
<gadget id="calculator"> 0.10*15+0.08*35</gadget>
<output>4.3</output>
4.3 kg, so the percentage is  4.3/50*100= 
<gadget id="calculator"> 4.3/50*100</gadget>
<output>8.6</output>
8.6%.   Answer: 8.6%.
<result>E</result>
In one alloy there is 10% chromium while in another alloy it is 8%. 15 kg of the first alloy was melted together with 35 kg of the second one to form a third alloy. Find the percentage of chromium in the new alloy.