



 
Hi Kenneth, I can show you a way to approach this problem and get you started. First I drew a diagram, I almost always draw a diagram. H is home, B is the bank, S is the book store and W is work. On the time scale Mandy is at B at 7:52 and at S at 8:02. Thus it takes her 10 seconds to go from B to S. For distance I let the distance from H to W be D units. Thus the distance from B to S is \[\frac{3}{4} D  \frac{1}{3} D = \frac{5}{12} D.\] Hence Mandy goes a distance of $\large \frac{5}{12} \normalsize D$ units in 10 seconds. I'm sure you can do the rest, 



Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 