Suppose it is x minutes from 9 o'clock, then it is 3×60-x= 180-x minutes from 12.

The number of minutes from 9 o'clock before 15 minutes is x- 15, from which the equation is obtained.

(x- 15)=4( 180-x)

x- 15=720-4x

x+4x=720+ 15

5x=735

x= 147

147 minutes =2 hours and 27 minutes

Yes 1 1: 27.