Answer:
The pressure will decrease 3 times
Explanation:
In this case, we apply Boyle Mariotte's Law: for a given gas mass at constant temperature, the pressure and volume vary inversely proportionally (the higher the pressure, the lower the volume and vice versa).
By increasing the volume 3 times, the pressure decreases 3 times to maintain the relationship: P1xV1 = P2xV2
