A is half good a work man as B and together they finish a job in 12 days. In how many days working alone B finish the job? Pick one
A) 23
B) 22
C) 18
D) 36
E) 48
18   18   W18 = 1:2   2x + x = 1/12 =&gt; x = 1/36   2x = 1/18 =&gt; 18 days
<result>C</result>
A is half good a work man as B and together they finish a job in 12 days. In how many days working alone B finish the job?