6 workers do 1 km in 4 days
1 worker does 1 k m in 4/6 or 2/3 days
4 workers do 1 km in 8/3 days
4 workers do 3 km in 3(8/3) or 8 days
if 6 workers complete a 1 km of roadway in 4 days. how long would it take for 4 workers to complete 3 km of roadway
2 answers
6 workers do 1 km in 4 days
1 worker does 1 km in 4*6=24 days
1 worker does 3 km in 24*3=72 days
4 workers do 3 km in 72/4 = 18 days
or,
1km of road is 6*4 = 24 man-days
3km is thus 3*24 = 72 man-days
72 man-days/4man = 18 days
1 worker does 1 km in 4*6=24 days
1 worker does 3 km in 24*3=72 days
4 workers do 3 km in 72/4 = 18 days
or,
1km of road is 6*4 = 24 man-days
3km is thus 3*24 = 72 man-days
72 man-days/4man = 18 days
1 answer