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8 men can do a work in 12 days. After 6 days of work, 4 more men were engaged to finish the work. In how many days would the remaining work be completed?
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Explanation:
let 1 men does 1 unit of work per day
Total work: 8×12=96units
6 days work of 8 men
=8×6=48 units.
work lelt =96−48=48 units
After 6 days 4 men join. so total men is 12 men (8+4) they will do 12 unit of work per day
Now,
remaining work completed in
=48\12
= 4 days