Answer
$$3.00$$
Work Step by Step
Work done by the gas is
$W=\int_{V_{0}}^{4 V_{0}} p_{0} d V=p_{0}\left(4.00 V_{0}-1.00 V_{0}\right)=3.00 p_{0} V_{0} \Rightarrow \frac{W}{p_{0} V}=3.00$
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