oh and can any1 help on q4 four vehicles i cant get bii)
the question is:
a car a van a truck and a bike r all travelling in the same direction on the same road, each at its own constant speed. at 10am, the car overtakes the van; at noon, it overtakes the truck;at 2pm it overtakes the bike.
at 4pm the truck overtakes the bike and, at 6pm the van overtakes the truck.
a) the speed of the car is 120km/h and the speed of the trck is 80km/h.
i) find the speed of the van and the bike.
ii)find the time at which the van overtakes the bike.
b)let c and T represent the speeds, in km.h, of the car and the truck respectively.
i) find the speed of the van and bike in terms of c and T.
ii) show that the time when the van overtakes the bike is the same, regardless of the speed of the car and the truck.(this is the question im stuck on)