Solve the all parts of given question:
Question: Two events in reference frame S occur 15 us apart at the same point in space. Frame S' travels at speed v=0.87c relative to frame S.
Part I: What is the time interval between the events in reference frame S' in us?
Part II: What is the distance between two events in reference frame S' in meters?
I am need of complete solution for this question please help- me out to get right solution.