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CAT 2018 Question Paper Shift 1 Solved Paper

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Question : 76

Total: 100

Humans and robots can both perform a job but at different efficiencies. Fifteen humans and five robots working together take thirty days to finish the job, whereas five humans and fifteen robots working together take sixty days to finish it. How many days will fifteen humans working together (without any robot) take to finish it?
Options

32
36
45
40

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