Mathematics, 16.03.2022 02:40 trin4613

A deck of 320 punched cards can be read by one reader in 20 minutes. A second reader can read the same deck in 12 minutes. How many minutes would it take both readers working together to read a deck?

How long would it take to process the deck of cards if the first reader stopped working after 5
minutes?

Answers: 3

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A deck of 320 punched cards can be read by one reader in 20 minutes. A second reader can read the sa...

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