A is half good a work man as B and together they finish a job in 18 days. In how many days working alone B finish the job? Choose the correct answer:
A) 23
B) 22
C) 27
D) 36
E) 48
27   27   W27 = 1:2   2x + x = 1/18 =&gt; x = 1/54   2x = 1/27 =&gt; 27 days
<result>C</result>
A is half good a work man as B and together they finish a job in 18 days. In how many days working alone B finish the job?