Question 9
Alan has an old grandfather clock. The grandfather clock is moving slower than the normal clock. Every day at 9 am, Alan corrects it from 8:30 am to 9:00 am. One day, Alan went on vacation for 4 days. He left his house at 9:00 am after resetting the clock. When Alan returned after vacation to correct the clock to 9:00 am, what time did the clock show?