tjsprott
tjsprott tjsprott
  • 10-04-2021
  • Mathematics
contestada

It takes Paul 9 hours longer than Li Ming to paint a house. Working together they can do the job in 20 hours. How long would it take Li Ming, working alone, to paint the house ?

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thewaveoftruth
thewaveoftruth thewaveoftruth
  • 10-04-2021

Li Ming can paint the whole house in 10 hours

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