Answer :
Final answer:
Boris will be 333.33 meters from his starting point after 1500 seconds.
Explanation:
Given that Stella walks three times faster than Boris, we can determine their speeds relative to each other. Let's assume that Boris walks at a speed of x meters per second. Stella's speed would then be 3x meters per second.
Since they are both walking on a circular path with a radius of 1000 meters, their distances from the starting point will be directly proportional to the time they have been walking. After 1500 seconds, Boris will have covered a distance of 1500x meters, while Stella will have covered a distance of 1500(3x) = 4500x meters.
Since we are given that Stella is three times faster, we can set up the equation 4500x = 1000 to find the value of x. Solving for x, we get x = 1000/4500 = 2/9 meters per second. Therefore, after 1500 seconds, Boris will be 1500 * (2/9) = 333.33 meters from his starting point. Answer choice d) 1500 meters is incorrect.
