A certain lab experiments with white and brown mice only. In one experiment, 2/3 of the mice are white. If there are 14 white mice in the experiment, how many brown mice are in the experiment? Choose the correct choice from the following answers
A) 12
B) 8
C) 28
D) 7
E) 27
Let total number of mice = M   Number of white mice = 2/3 M=14 M =21   Number of brown mice = 1/3 M = 1/3*21   =&gt;brown mice = 7   Answer 7
<result>D</result>
A certain lab experiments with white and brown mice only. In one experiment, 2/3 of the mice are white. If there are 14 white mice in the experiment, how many brown mice are in the experiment?