5 skilled workers can build a wall in 20days; 8
semi-skilled workers can build a wall in 25 days; 10
unskilled workers can build a wall in 30days. If a te
am has 2 skilled, 6 semi-skilled and 5 unskilled
workers, how long will it take to build the wall? Choose the correct choice from the following options
A) 15days  B) 16days  C) 14days  D) 18days  E) 17days
For Skilled   5 workers --------20 days   5 workers 1 day work= 1/20   1 worker's 1 day work= 1/(5*20)   Similarly,   For Semi-Skilled------   1 worker's 1 day work= 1/(8*25)   For Unskilled------   1 worker's 1 day work= 1/(10*30)   For 2 skilled,6 semi-skilled and 5 unskilled   workers   One day work= 2*[1/(5*20)] +6*[1/(8*25)] + 5*[ 1/(10*30)] = 1/15   Therefore no. of days taken= 15   15daysNSWER:15days
<result>A</result>
5 skilled workers can build a wall in 20days; 8
semi-skilled workers can build a wall in 25 days; 10
unskilled workers can build a wall in 30days. If a te
am has 2 skilled, 6 semi-skilled and 5 unskilled
workers, how long will it take to build the wall?