Answer
$P_{1}=0.30MPa$
Work Step by Step
From table A-4 at $T=124^{\circ}C$
$\upsilon_{2}=0.794362\frac{m^3}{kg}$
As the tank is rigid $\upsilon_{2}=\upsilon_{1}$
Interpolating from table A-6:
$P_{1}=0.30MPa$
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