Question 372353
Pythagoras's rate = x
Archimedes' rate = 2x
Total time working together = 2 hours
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I will continue your steps
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Pythagoras's can do 1/x of the job in 1 hour
Archimedes' can do 1/ 2x of the job in 1 hour.
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together they can do 1/x + 1/2x of the job in 1 hour
(2+1)/2x
=2+1/2x
=3/2x
So they will take 2x/3 hours to do the job. = 2
2x/3=2
multiply by 3
2x = 6
/2
x=3 Pythagoras's time
2x= 6 hours = Archimedes
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so you know how many hours they take
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m.ananth@hotmail.ca