The pressure p and the voluem v of a gas...

The pressure p and the voluem v of a gas are connected by the relation pv = 300. If the volume is increasing at the rate of 0.6 cubic cm minute then the rate of change in pressure of the gas when the volume is 30 cubic cm is

2 units/min

0.2 unit/min

`-2` unit/min

`-0.2` unit/min

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