Problema Solution
cesar entered a 400 meter track event . it would have taken him 30 seconds less time to complete the race if he had run 3m per second faster. how fast did he run?
Answer provided by our tutors
Let 'v' represent Cesar's normal speed.
v + 3 = Cesar's speed if he ran 3 m/s faster
d = 400 m the distance
Since speed = distance/time follows time = distance/speed:
400/v = 400/(v + 3) + 30
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click here to see the equation solved for v
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v = 5 m/s
Cesar ran with speed of 5 meters per second.
Let 'v' represent Cesar's normal speed.
v + 3 = Cesar's speed if he ran 3 m/s faster
d = 400 m the distance
Since speed = distance/time follows time = distance/speed:
400/v = 400/(v + 3) + 30
........
click here to see the equation solved for v
........
v = 5 m/s
Cesar ran with speed of 5 meters per second.