The proportion of copper and zinc in the brass is 13:7. How much zinc will there be in 100 kg of brass?  Select:
A) 65 kg	B) 35 kg	C) 88 kg	D) 66 kg	E) 44 kg
7/20 * 100= 
<gadget id="calculator">7/20 * 100</gadget>
<output>35</output>
35   Answer:35 kg
<result>B</result>
The proportion of copper and zinc in the brass is 13:7. How much zinc will there be in 100 kg of brass?