Worker A and B can paint a certain house if A works 6 days and B works 12 days, or they can paint the house if A works 9 days and B works 8 days. Determine the following: The time it would take for...

Worker A and B can paint a certain house if A works 6 days and B works 12 days, or they can paint the house if A works 9 days and B works 8 days. Determine the following:

1. 
   
   
   
   1. The time it would take for each worker to paint the house alone.
   
   
   2. Explain the concepts/principles that were considered and the factors that affected the condition of item (a)