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Answer»

Step-by-step explanation:

A complete WORKS in 40 DAYS & it is twice good as B

so that for this work B complete it in 2*40 = 80 days

T=1/W

=> A work W = 1/40

=> B work W = 1/80

total work = 1/40 + 1/80 = 3/80

total time if they do together = 80/3 = 26.7 days



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