Working alone
Tom and Chandri are doing household chores. Chandri can do the work twice as fast as Tom. If they work together, they can finish the work in 5 hours. How long does it take Tom to work alone to do the same work?
Correct answer:

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You need to know the following knowledge to solve this word math problem:
algebraUnits of physical quantitiesthemes, topicsGrade of the word problem
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