Mathematics, 05.05.2021 23:20 emilylunaa
If a takes person A 11 minutes, person B 21 minutes, and person C 33 minutes to complete the same task individually, then how long would it take if they work together? Estimate your answer to two places after the decimal, if necessary.
Answers: 1
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Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?
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