SOLUTION: roma can finish weeding a flower garden in 4 1/2 hours. roma has worked for 2 hours before amor joined her and they finished the job in 2 hours. how long would it take both of them

Question 150565This question is from textbook
: roma can finish weeding a flower garden in 4 1/2 hours. roma has worked for 2 hours before amor joined her and they finished the job in 2 hours. how long would it take both of them to finish the job working together? how long would it take amor to do the job alone? This question is from textbook

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = Roma's rate of working
Let = Amor's rate of working
, their rate working together
Roma's rate is (1 garden weeded)/4.5 hrs

What part of the job did Roma do in 2 hours?

So, of the job is left when Amor joins her
They did of the job in hrs
is their rate working together
Multiply top and bottom by

They can do the whole job in of an hour
= 3 hrs 36 min answer
-------
To find Amor's time to do the whole job,

Multiply both sides by

This is Amor's rate, which is
(1 job)/(18 hours)
It takes Amor hrs to do the job alone
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