A bicyclist traveled with a speed of 12 km/h from a camping ground to a station, located 60 km away. Write a formula expressing the dependence of the variable d on t, where d is the distance between the bicyclist and the station in km and t is the time travelled in hrs. Using the formula, find: d for t=3.5 (I tried 42, 3 times and 24, one time but it says its wrong tho the second part of 2.5 hrs was correct) plz help