Harvesters 5853

One combine harvester harvests a wheat field in 12 hours, and another combine harvester in 16 hours. How long does the same field harvest the third combine harvester alone if all three harvesters harvest the wheat field in 2 hours?

Correct answer:

t =  2.8235 h

Step-by-step explanation:

2 (121+161+t1)=1  2 (12t+16t+1)=t  2 (t/12+t/16+1)=t  34t=96  t=3496=2.82352941  t=17482.823529=1748 h=2.8235 h



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