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Mathematics, 17.09.2019 06:20 kstyleszdance
Two mechanics, bonita rich, and pamela pearson, take 7 hours to rebuild an engine when they work together. if each worked alone, bonita, the more experienced mechanic, could complete the job 3 hours faster than pamela. how long would it take each of them to rebuild the engine working alone?
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Two mechanics, bonita rich, and pamela pearson, take 7 hours to rebuild an engine when they work tog...
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