Jeffrey can paint a house in 6 days, but if he gets a , he can do it in 4 days. how long would it take the to paint the house alone?

  12 days

Step-by-step explanation:

Jeffrey's rate is 1/6 house per day; together their rate is 1/4 house per day.

Their total rate is the sum of their individual rates, so we have ...

  total rate = Jeffrey's rate + Helper's rate

  1/4 house/day = 1/6 house/day + Helper's rate

  (1/4 -1/6) house/day = Helper's rate = 1/12 house per day

It would take the Helper 12 days to paint the house alone.

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.