(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Machine A can do a job, working alone, in 4 hours less than machine B. Working together, they can complete

the job in 5 hours. How long would it take each machine, working alone, to complete the job?

2. Relevant equations

Ans. Machine A: 8.4 hours; machine B: 12.4 hours, approximately

3. The attempt at a solution

Don't know how to reason this one through ...

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# Word problem

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