robinsoladyrp robinsoladyrp
  • 22-01-2017
  • Mathematics
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Working alone, it takes Julia 16 hours to clean an attic. Lea can clean the same attic in 15 hours. If they worked together how long would it take them?

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1217aaronredis1
1217aaronredis1 1217aaronredis1
  • 22-01-2017
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