A is twice as good a workman as B and they took 10 days together to do the work B alone can do it in? Choose the correct choice from the following options
A) 25 days
B) 88 days
C) 30 days
D) 11 days
E) 13 days
W30 days = 2:1   2x + x = 1/10   x = 1/30 =&gt; 30 days   Answer: 30 days
<result>C</result>
A is twice as good a workman as B and they took 10 days together to do the work B alone can do it in?