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Mathematics, 04.08.2019 16:30 tyler9158

Nakita recorded a video of homecoming highlights of the senior class and now everybody wants a copy. she promised to have 25 ready the next day but suddenly realized that it will take her ten hours to do that. her friend, abby, volunteered to and she can do the job alone in 15 hours. how long will it take the girls, working together, to complete the job?

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