Agym hold a 60 minute time exercise class on saturday a several 45 minute classes during. the week last week all of the classes lasted a total of 285 minutes. write an equation you can use to find the number of the weekday classes

Talia took the bus from her home to the bank and then walked back to her home along the same route. the bus traveled at an average speed of 40 km/h and she walked at an average speed of 5 km/h. to determine the time, x, that it took talia to walk home, she used the equation 40(0.9 – x) = 5x. the time of trip 2 is hours. the distance of trip 1 is km.