



 
Lee, Hints for 1): you are not meant to worry about interest rates. The question is just, if one month represents $50.25 saved,how many times must this be done to get to $700? The answer will not be a whole number of months. 2) Usually problems like this involve people working at different speeds. If this is the case here, we do not have enough information to solve the question (which I consider to be rather badly written!) We cannot assume the rugs to be the same size, as one is said to be smaller. So our only natural simplifying assumption is that both cleaners work at the same speed. IF you make this assumption the problem is easy. Good Hunting!  


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