## – If ‘A’ can do piece of work in 30 days while ‘B’ alone can do it in 40 days. In how many days can A & B complete this work t

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## Answers ( )

Answer:A –

one day work =1/30

B-

one day work =1/40

A and B

one day work = 1/30+1/40=7/120

no.of days both will take together to complete this work = 120/7= days