Aarti can do a piece of work in 3 days. In how many days will she complete four time of work of same type? Pick:
A) 12 days  B) 18 days  C) 21 days  D) 3 days  E) 13 days
We have the important relation, More work, More time (days)   A piece of work can be done in 3 days.   Four times of work of same type can be done in 3 x 4   = 12 days   12 daysnswer 12 days
<result>A</result>
Aarti can do a piece of work in 3 days. In how many days will she complete four time of work of same type?