(a)
In clock a, the time is 3:30.
If clock moves in clockwise direction by 30 minutes then minute hand reach the 12 number as every division represents the 5 minutes and hour hand reached the number 4. So in clock b time is 4:00.
This means you to draw minute hand (longer one) at 12 and hour hand (smaller one) at 4.
(b)
The 1/4 turns means 1/4 of 60 minutes.
Determine the 1/4 of 60 minutes.
So for 30 minutes in clockwise direction the minute hand turn 2, 1/4 turns.
Answer: 2