Harvesters 4498

The first combine harvester will harvest the fields in 12 hours, and the second combine harvester in 8 hours. How long does it take for the same harvester to harvest the 3rd combine if all three harvesters harvest together in 2 hours?

Correct answer:

t =  3.4286 h

Step-by-step explanation:

2/12+2/8+2/t = 1 2/t = 12/122/8 t=2/(12/122/8)=3.4286 h



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