Joseph jogs from one end "A" to another end

Question

"B"of a straight road in 300 metre in 2 minutes 50 seconds and then turns around and jogs 100 metre back to point"c"in another 1 minute.What is the Joseph'S average speed and velocity from
"A"to"B"
"A"to"c"

Answer 1

A to B
speed = 300m/170 seconds
velocity = speed if that direction is +

then A to C
distance = 300 + 100 = 400
average speed = 400/230

but total displacement = +300 - 100 = 200
so'=average velocity = 200/230