Multiple choice

A is twice as good a workman as B & together they finish a piece of work in 18 days. In how many days will A alone finish the work?

  1. 27 days

  2. 28 days

  3. 29 days

  4. 30 days

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

( A' s 1 day work ) : ( B'' s 1 day' s work ) = 2 : 1 ( A + B ) ' s 1 day' s work = 1/18 Divide 1/18 in the ratio 2 : 1 A' s 1 day work = ( 1 /18 ´ 2/3 ) = 1 / 27 Hence A alone can finish the work in 27 days.