ICSE Class 8 Answered
90 men can complete a work in 24 days working 8 hours a day.How many men are required to complete the same work in 18 days working 7 1/2 hours (the number is mixed numdber)) a day?
Asked by aratisaha89 | 17 Feb, 2019, 09:47: PM
Expert Answer
90 men complete the work in 24 days if they work 8 hrs/day
total work hours for 90 men = 24×8 = 192 hours
number of man-hours to complete the work = 90×192
if work has to be completed in 18 days with working hours, total work hours 18× = 15×9 = 135 hours
required number of workers = (90×192) / 135 = 128
Answered by Thiyagarajan K | 17 Feb, 2019, 11:07: PM