Yes, your answer is correct
if the length is 8ft and the width is (7+x) then the area would be 56+8x, if x is unknown.
The answer is 1/22 hope i could help all though i am pretty sure i am right p.s sorry it took so long
Let's give some distances
100 up 100 flat 100 down meters
then return 100 up 100 flat 100 down
time required (distance/rate = time ) 200/100 + 200/120 + 200 / 150 = 5 hr
distance 600
distance / time = average speed = 600/5 = 120 m/s
