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3 years ago

13

On the production line, it takes John 2 minutes less time than Mark to assemble a watch. Working together they can assemble 5 wa

tches in 12 minutes. How long does it take John to assemble a watch working alone?

1 answer:

tangare [24]3 years ago

7 0

12÷5=2.4
2.4 minutes per watch together
so it takes john about 0.4 seconds to assemble a watch alone

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