Shivam is climbing on a moving escalator that is going up and takes 30 steps to reach the top. Atharva on the other hand is coming down on the same escalator. For every 5 steps that Atharva takes, Shivam takes only 3 steps. Both of them take the same amount of time to reach the other end. What is the difference in the number of steps that both of them had taken when they crossed each other?
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