Concept explainers
To find: Here long will it take each of them woring alone to finish the job .
Explanation of Solution
Given information: Bruce and Bryce working together can complete the job in 1 hours and 20 minutes (i.e 80 minutes ).
So, Bruce and Bryce 1 minutes work is
Similarly :
Bruce+ Bryce=
Bruce+ marty=
Marty+ Bruce
Adding equation (1),(2) and (3), we get
2[Bruce+ Bryce+ marty]=
Now, from equation (1)
marty=
marty=
so, Marty can complete the job in
from equation (2)
Bryce
Bryce
So, Bryce the job in 120 minutes
Now, from equation (3)
Bruce
Bruce
So bruce can complete the job in
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