During a recent track meet, Peter ran x meters of the 100 meter dash in 4 seconds; running at the same rate, how many seconds will it take Peter to run z meters of the 200 meter dash?
Choose the most appropriate option
A) 4zx	B) 4z/x	C) 4x/z	D) 4/xz	E) xz/4
Speed of Peter = x/4 meters per second   Time needed to run z meters = DISTANCE/SPEED = z / (x/4) = 4z/x   Option 4z/x   The values 100m and 200m have no role to play here and are just given to confuse you.
<result>B</result>
During a recent track meet, Peter ran x meters of the 100 meter dash in 4 seconds; running at the same rate, how many seconds will it take Peter to run z meters of the 200 meter dash?