A Klingon spacecraft has a speed of 0.75c with respect to the earth. The Klingons measure 37.0

Question:

A Klingon spacecraft has a speed of 0.75c with respect to the earth. The Klingons measure 37.0 h for the time interval between two events on the earth. What value for the time interval would they measure if their ship had a speed of 0.94c with respect to the earth?