Respuesta :

for shannon, miles per week is 16.8 and miles per month is 72.
and for regina, miles per week is 12.25 and miles per month is 52.5.
cedric=miles\week:7 x 0.6=4.2          miles\may=0.6 x 31=18.6
shannon=              :7 x 2.4=16.8                        =4.2 x 31=130.2
regina                    :1.75 x 7=12.25                     =1.75 x 31=54.25