A can finish a work in 18 days and B can do same work in half the time taken by A. then working together, what part of same work they can finish in a day  Choose the correct option.
A) 1\5  B) 1\6  C) 1\7  D) 1\8  E) 1\9
Explanation:   Please note in this question, we need to answer part of work for a day rather than complete work. It was worth mentioning here because many do mistake at this point in hurry to solve the question   So lets solve now,   A's 1 day work = 1/18   B's 1 day work = 1/9 [because B take half time than A]   (A+B)'s one day work =   (1/18+1/9)   =(1+2 /18)=1/6   So in one day 1/6 work will be done.   Option 1\6
<result>B</result>
A can finish a work in 18 days and B can do same work in half the time taken by A. then working together, what part of same work they can finish in a day