SOLUTION: If it takes A 3 days to dig a ditch. B 6 days and C 12 days. How long will it take them to finish the job if they do it together?
Algebra.Com
Question 894084: If it takes A 3 days to dig a ditch. B 6 days and C 12 days. How long will it take them to finish the job if they do it together?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
1/3+1/6+1/12=1/x
4/12+2/12+1/12=1/x
7/12=1/x
x=12/7 days
check
12/7/3+12/7/6+12/7/12=1
4/7+2/7+1/7=1
7/7=1
ok
RELATED QUESTIONS
x does a job in 6 days. Y does the same job in 3 days. If they do the job together, how... (answered by checkley77,caet)
it takes Jacob 3 hours to dig a ditch, which is 6 feet deep. Johnson can accomplish the... (answered by ankor@dixie-net.com)
manny and manuel can finish a certain job if manny works for 15 days and manuel works for (answered by greenestamps)
A can finish a certain job in 10 days if B will help for 6 days. The same work can be... (answered by ankor@dixie-net.com)
It takes Victor 6 days more to paint a house than Roger. If they work together, they can... (answered by rothauserc,ikleyn)
It takes 8 people 3 days to dig a ditch that is 1,000 feet long, how long will it take 4... (answered by Fombitz,stanbon)
if sam can do a certian job in 3 days while it takes fred 6 days to do the same job how... (answered by solver91311)
If it takes a crew 9 days to do 80% of the job, how many more days will it take to finish (answered by josmiceli)
If a man takes 7 days to dig his garden and the son takes 4 days. How long would it take... (answered by tommyt3rd)