1. \(\angle PSQ = \angle SQR = \angle SRQ = 24^\circ\)

2. \(\angle QSR = 180^\circ - 48^\circ = 132^\circ\)

3. \(\angle PSQ + \angle QSR + y + 180^\circ\) (angle on a straight line)

4. \(24^\circ + 132^\circ + y = 180^\circ\)

5. \(156^\circ + y = 180^\circ\)

6. \(y = 180^\circ - 156^\circ\)

7. \(y = 24^\circ\)