tmac4life01 tmac4life01

28-06-2017
Mathematics

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Barb, Shelley, and Darcy are college roommates. Barb goes to the library every 6 days, Shelley goes the library every 7 days, and Darcy goes to the library every 4 days. If all three of them went to the library today, when is the next time that they will all be at the library on the same day?

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tiara143 tiara143

03-07-2017

Ans; After 83 days i.e. on 84th days

Barb, Shelley, and Darcy are college roommates.

Barb goes to the library every 6 days,

Shelley goes the library every 7 days, and

Darcy goes to the library every 4 days.

If all three of them went to the library today, then the next time that they will all be at the library on the same day will be the LCM of 6,7, and 4 i.e.on 84th day.

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