A worker noticed that the hour hand on the factory clock had moved by 225 degrees during her stay at the factory. For how long did she stay in the factory?

Q. A worker noticed that the hour hand on the factory clock had moved by 225 degrees during her stay at the factory. For how long did she stay in the factory?

(A) 3.75 hours

(B) 4 hours and 15 mins

(C) 8.5 hours

(D) 7.5 hours

Ans: 7.5 hours

Solution:

Since, we know that 360° = 12 hours