In one alloy there is 12% 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.	Pick.
A) 8.8%	B) 9%	C) 9.2%	D) 8.6%	E) 8.4%
The amount of chromium in the new 15+35= 
<gadget id="calculator">15+35</gadget>
<output>50</output>
50 kg alloy is  0.12*15+0.08*35= 
<gadget id="calculator"> 0.12*15+0.08*35</gadget>
<output>4.6</output>
4.6 kg, so the percentage is  4.6/50*100= 
<gadget id="calculator"> 4.6/50*100</gadget>
<output>9.2</output>
9.2%.   Answer: 9.2%.
<result>C</result>
In one alloy there is 12% 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.