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"john and Andrew working together can do a piece of work in 2 2/3 days. John working alone takes 2 days less than Andrew. How long does it take Andrew to do the work alone?"

 May 8, 2020
 #1
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1/ (a-2)  +  1 / a   = 1 / (2 2/3)        solve for a

 May 8, 2020

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