Asked by Anonymous
                it takes joh 2 hours to finish working in a yard, mark can work on the same yard for 3 hours. how long will it take both of them if they work as a team?
            
            
        Answers
                    Answered by
            Steve - ouch!
            
    If it takes them x hours working together, then
1/2 + 1/3 = 1/x
The equation reflects the idea of how much of the job each can do in an hour. Add that up, and it shows how much of the whole job gets done in an hour.
    
1/2 + 1/3 = 1/x
The equation reflects the idea of how much of the job each can do in an hour. Add that up, and it shows how much of the whole job gets done in an hour.
                    Answered by
            Damon
            
    joh = 1 y / 2 h
m = 1 y / 3h
so
(1/2 + 1/3) yard per hour together = 5/6 y/h
(5/6) yards/hr * t hr = 1 yard
t = 6/5 hours
    
m = 1 y / 3h
so
(1/2 + 1/3) yard per hour together = 5/6 y/h
(5/6) yards/hr * t hr = 1 yard
t = 6/5 hours
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