Question 1156875
Six men working at the same rate can weed a farm in 16 days. After working for 4 days, 2 more men were hired. How long did they take to weed the farm? 




6 men ----16 days
1 man-----x days

1 man does 1/96 of the job in 1 day

6 men will do 6/96 =1/16 of the job in 1 day

they work for 4 days so they complete 4*1/16 of the job = 1/4 of the job

Balance job = 1-(1/4) = 3/4 of the job

8 men will complete 8*1/96 of the job in 1 day= 1/12 of the job


1/12 of the job in 1 day
3/4 of the job in y days

y = (3/4)/(1/12)

y = Balance job in 9 days

9+4 =13 days

The job will be completed in 13 days instead of 16 days


check calc