We're asked to calculate the new pressure of a gas after it is subjected to a change in volume with constant temperature.
We can solve this problem using the pressure-volume relationship of gases, illustrated by Boyle's law:
Since we're trying to find the final pressure, let's rearrange this equation to solve for
Plugging in the known variables, we have
rounded to two significant figures, the amount given in the problem.
The pressure thus increases to