In one alloy there is 12% chromium while in another alloy it is 8%. 20 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: A) 9.45% B) 10% C) 15% D) 20% E) 25%
The amount of chromium in the new 20+35= 
<gadget id="calculator">20+35</gadget>
<output>55</output>
55 kg alloy is  0.12*20+0.08*35= 
<gadget id="calculator"> 0.12*20+0.08*35</gadget>
<output>5.2</output>
5.2 kg, so the percentage is 5.2/55*100=9.2%.   9.45%nswer: 9.45%.
<result>A</result>
In one alloy there is 12% chromium while in another alloy it is 8%. 20 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.