Welders

The first welder can do a job in 6 hours and the second in 8 hours. How long would the third welder take to do the job alone, if all three together can complete the job in 2 hours?

Final Answer:

x =  4.8 h

Step-by-step explanation:

2 (61+81+x1)=1  6x+8x+1=2x  x/6+x/8+1=x/2  5x=24  x=524=4.8  x=524=4.8=4.8 h



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