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On the production line, it takes John 2 minutes less time than Mark to assemble a watch. Working together they can assemble 5 watches in 12 minutes. How long does it take John to assemble a watch working
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On the production line, it takes John 2 minutes less time than Mark to assemble a watch. Working together they can assemble 5 watches in 12 minutes. How long does it take John to assemble a watch working alone?

User Kevinosaurio
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1 Answer

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

User Gavin Bong
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8.3k points
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