Question 887113
Parallel resistors, parallel flow and parallel work are similar.
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t = 3*6/(3+6)
t = 2 hours
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To explain:
In 1 hour, jon paints 1/3 of the fence and karen paints 1/6
--> each hour, they paint 1/3 + 1/6 together = 1/2 of the fence.
1/2 per hour --> 2 hours to do the job.