A is twice as good as workman as B and together they finish a piece of work in 18 days. In how many days will B alone finish the work.	Choose one.
A) 27 days	B) 54 days	C) 56 days	D) 68 days	E) none of these

Rationale: explanation : as per question , a do twice the work as done by b . so a : b = 2 : 1 also ( a + b ) one day work = 1 / 18 to get days in which b will finish the work , lets calculate work done by b in 1 day = = ( 118 ∗ 13 ) = 154 [ please note we multiplied by 1 / 3 as per b share and total of ra ɵ o is 1 / 3 ] so b will finish the work in 54 days answer : b
Answer: B