SOLUTION: Working alone, worker A can complete a task in 3 hours; worker B can complete it in 6 hours. How long will it take for both of them, working together, to complete the task?

Question 411140: Working alone, worker A can complete a task in 3 hours; worker B can complete it in 6 hours. How long will it take for both of them, working together, to complete the task?
Answer by eric.schuh(2) (Show Source): You can put this solution on YOUR website!
you use this equation 1/a+1/b= 1/t so you will have 1/3+1/6=1/t
3 6 t
you need to find the LCD of 3&6 3*2=6
now it becomes 2t+1t=6 == 3t=6 divide both numbers by 3 3t/3t=t 6/3=2
so t=2 it would take them 2 hours working together
RELATED QUESTIONS
When working together worker A and worker B take 8 hours to complete a project.Today they (answered by ankor@dixie-net.com)

An application of a rational function is T = (AB)/(A+B), which gives the time, T, it... (answered by stanbon)

It takes person A 4 hours less than person B to complete a certain task. Working... (answered by josmiceli)

one person can complete a task 8 hours sooner than another person. working together both (answered by josmiceli)

Tom and dick working together can perform a task in 2 hours and 24 minutes. Dick and... (answered by ikleyn)

Tom and Dick, working together, can perform a task in 2 hours and 24 minutes. Dick and... (answered by ikleyn)

Two workers: A and B can work together in 8 hours, and worker B can work in 12 hours... (answered by stanbon)

Two workers: A and B can work together in 8 hours, and worker B can work in 12 hours... (answered by ikleyn)

2 landscape workers can complete a certain job in a total of 20 hours. Working alone,... (answered by josgarithmetic)