SOLUTION: p & q can harvest a filed in 5 &7 days respectively . after p has worked for 3 days , he is joined by q. in how many more days will the work be completed?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: p & q can harvest a filed in 5 &7 days respectively . after p has worked for 3 days , he is joined by q. in how many more days will the work be completed?      Log On


   

Question 838644: p & q can harvest a filed in 5 &7 days respectively . after p has worked for 3 days , he is joined by q. in how many more days will the work be completed?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
RATES in FIELDS PER DAY
p, 1%2F5
q, 1%2F7


d = how many days that q worked along with p to finish the field
BASIC CONCEPT: R*T=J, where T is time, J is quantity of job, and R is rate of doing the job in jobs per time.

highlight_green%28%281%2F5%293%2B%281%2F5%2B1%2F7%29d=1%29
Solve for d.