In a group of hats consisting of only blue hats, green hats, and purple hats, the ratio of blue hats to green hats to purple hats is 7:4:12. If there are a total of 69 hats in this group, how many of these hats are not blue?	Answers:	A) 28	B) 42	C) 48	D) 64	E) 76
B:G:P = 7:4:12 --&gt; total of 23 parts.   Not blue = (G + P)/(total)*92 = 16/23*69= 
<gadget id="calculator">16/23*69</gadget>
<output>48</output>
48.   Answer: 48.
<result>C</result>
In a group of hats consisting of only blue hats, green hats, and purple hats, the ratio of blue hats to green hats to purple hats is 7:4:12. If there are a total of 69 hats in this group, how many of these hats are not blue?