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Maths Puzzle
Algebra
A group of men did a job in 30 min. another group of men did it in 20 min. IF both groups worked together how long will it take to finish the job?
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- 12 min.
Both group's job of 1 min.=(1/30)+(1/20)=1/12
So time taken to finish the job=1/(1/12)=12 min. - 10 years agoHelpfull: Yes(0) No(0)
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