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20-10-2017
Mathematics

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Sally left paris traveling 84mph. Joan, to catch up, left some time later driving at 93mph. Joan caught up after 9 hours. How long was Sally driving for before Joan caught up?

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casey59 casey59

20-10-2017

Sally was driving 10 minutes before Joan caught up to her .

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20-10-2017

84(x) = 93(9)
84(x) = 837
x = 837/84
x = 9.96 hrs

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