Aerospace Engineering > GATE 2010 > Time and Work
5 skilled workers can build a wall in 20 days; 8 seini-skilled workers can build a wall in 25 days; 10 unskilled workers can build a wall in 30 days. If a team has 2 skilled, 6 semi-skilled and 5 unskilled workers, how long will it take to build the wall?
Correct : d
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