Question 838644
RATES in FIELDS PER DAY
p, {{{1/5}}}
q, {{{1/7}}}



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((1/5)3+(1/5+1/7)d=1)}}}
Solve for d.