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A farmer uses two harvesters to harvest wheat on his farm. One of the harvesters is Ferguson and the other is a Honda. It normally takes both harvesters working together 3 hours and 20 minutes to complete the job. On one occasion both harvesters started working together,
but after 40 minutes the Ferguson broke down and the Honda had to complete the job alone. It took a further 4 hours to complete the job.
Determine how long it would take each harvester working alone to complete the job.