Question
71 of
100
Question Palette
A, B and C can complete a piece of work in 14, 6 and 12 days respectively. Working together, they will complete the work in?
Correct Option:
C
Explanation
Their one-day work rates are:
1/(14)+1/(6)+1/(12)
LCM = 84:
6/(84)+(14)/(84)+7/(84)
=(27)/(84)
=9/(28)
So they complete 9/28 of the work per day. Required time:
(1)/(9/28)=(28)/(9) days
