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 138 hats in this group, how many of these hats are not blue? Select:
A) 96
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*138= 
<gadget id="calculator">16/23*138</gadget>
<output>96</output>
96.   96nswer: 96.
<result>A</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 138 hats in this group, how many of these hats are not blue?