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 s on t, where s is the distance between the bicyclist and the station in km, t - the duration (time) of his travel in hours. using the formula, find:
b
t for s=30
(make sure you have formula plz and the formula is not t=d/s)