Question 757742
The rates of each person working together are additive.

p for pam's rate and c for craig's rate.
pam works two times the rate of craig.


p=2c
The rates in jobs per hour are these:
craig: {{{1/(2h)}}}
pam: {{{1/(h)}}}
h is the time for craig to do the job alone.  The direct use of p=2c seems not needed although represents the description.


Equation:  {{{highlight(1/(2h)+1/h=1/8)}}} remember the unit is jobs per hour.


Solve for h.
{{{2h*(1/(2h))+2h(1/h)=2h/8}}}
{{{1+2=h/4}}}
{{{h=12}}}


Time each needs to do the job:
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Pam, h/1 = 12 hours___________
Craig, 2h/1 = 24 hours_________
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