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20-01-2018
Mathematics

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Adam can do a job in 10 days, while brenda takes 15 days to do it. after brenda works alone for 3 days, adam and brenda work together to finish the job. how many days did adam work?

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Аноним Аноним

20-01-2018

= [1- (3/15)]/(1/10 + 1/15)
= (4/5)÷(1/6)
= 24/5
= 4 4/5

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