Answer:
the answer is B
Step-by-step explanation:
B is = 5 because, if in 30 seconds he travels 150 feet. in one second he will travel
150 feet x 1 second / 30 seconds = 5 feet per second
if he travels 150feet in 30 seconds in 10 seconds he will travel
150 feet x 10 seconds / 30 seconds = 50 feet
that is why B is = 5x ; 50feet
