Answer
(a) 99536 Pa (b) 100124 Pa
Work Step by Step
(a) By considering the pressure in the same elevation we can write.
$P_{B}+h\rho g=P_{0}$
$P_{B}=P_{0}-h\rho g$ ; Let's plug known values into this equation.
$P_{B}=1.013\times10^{5}\space Pa -0.15\space m\times 1200\space kg/m^{3}\times9.8\space m/s^{2}=99536\space Pa$
When the height of the sauce = 0.15 m , the absolute pressure of the bulb = 99536 Pa
(b) Similarly,
$P_{B}=P_{0}-h\rho g$ ; Let's plug known values into this equation.
$P_{B}=1.013\times10^{5}\space Pa -0.1\space m\times 1200\space kg/m^{3}\times9.8\space m/s^{2}=100124\space Pa$
When the height of the sauce = 0.1 m, the absolute pressure of the bulb = 100124 Pa
