Q1. 12 men complete a work in 18 days. Six days after they had started working, 4 men joined them. How many days will all of them take to complete the remaining work ?
(a) 10 days
(b) 12 days
(c) 15 days
(d) 9 days
(e) none of these
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Answer:
d 9 days
let total work be 12 ×18=216
in 6 days work done is 12×6=72 days
remaining work=216-72=144
16men can complete it in 144/16=9days
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