:. A and B can do a piece of work
in 24 days and 12 days respec-
tively. A, B and C together can
do the same work in 4 days. If
A and B started to work and
worked for 3 days and there-
after the remaining work was
completed by C alone, for how
many days did C work ?
(1) 3 days (2) 5 days
(3) 4 days (4) 6 days
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