Question 507325
Petunia and Petal worked 5 hours and completed 1 1/24 jobs.
 If Petal took 12 hours to do one job, how long did it take Petunia to do two jobs?
:
Let p = Petunia's time to do one job
Change 1 1/24 to {{{25/24}}}
:
A shared work equation
{{{5/12}}} + {{{5/p}}} = {{{25/24}}}
multiply by 24p, results
2p(5) + 24(5) = 25p
10p + 120 = 25p
120 = 25p - 10p
120 = 15p
p = {{{120/15}}}
p = 8 hrs to do one job
therefore
2(8) = 16 hrs to do two jobs