SOLUTION: 9 painters can paint 3 houses in a week. In how many days can 6 painters do the same job?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: 9 painters can paint 3 houses in a week. In how many days can 6 painters do the same job?      Log On

 

Hi, 

Note: week =  7days and each group painting 3 houses

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9*7/3 = 6*x/3

  21/2 = x =  10.5days