Question

A can do half of a piece of work in one day whereas B can do full , B can do half the work
as C in one day. Ratio of their efficiencies is
(a) 4 : 2 : 1
(b) 2 : 4 : 1
(c) 2 : 1 : 4
(d) 1 : 2 : 4

Answer 1

here is your answer1:2:4