Hi,

Let x represent How many days can C finish the job alone 

      |Multiplying thru by 20x so as all denominators = 1

   4x + 5x + 20 = 10x

             20 = x, How many days can C finish the job alone 

 

RELATED QUESTIONS

A and B together can finish a piece of work in 12 days. it A alone can finish the same... (answered by ankor@dixie-net.com)

Danny can finish a job in 10 days. Together, Miguel and Danny can finish the same job in... (answered by rothauserc,ikleyn)

When A,B and C work together, they can finish 
installing the garden in 3 days. The job... (answered by ikleyn)

A can finish a certain job in 12 days . A&B can finish same job in 8 days.how many day... (answered by nerdybill)

A  and B can finish the job in  6 days. A can work 5 days less than B. Find the number of  (answered by ankor@dixie-net.com)

how long will it take edmun and rudy, together to finish a cabinet which edmun can finish  (answered by josgarithmetic,ikleyn)

i have solved that if Worker A finishes a job in 8 days and worker B finishes it in 12... (answered by josmiceli)

 a and b can do a piece of work in 18 days, b and c can do it in 24 days while c and a... (answered by ikleyn)

A&B working together can finish painting the house in six days. A, working alone, can... (answered by ankor@dixie-net.com)