Please help me with my math asap

How do i do this? i don’t understand

Apassenger train and a freight train leave san jose at 3pm, traveling in the same direction. the passenger train is going three times as fast as the freight train. at 6pm they are 240 miles apart. how fast is each travelling? explain your answer and show your

The radius of the sphere is 10 units .what is the approximate volume of the sphere use π=3.14