Answer
$\frac{R_{v_1}}{R_{v_2}}=\frac{1}{2}$
Work Step by Step
The mass flow rate is the same for the two holes
$\rho_1A_1v_1=\rho_2A_2v_2$
or, $\rho_1R_{v_1}=\rho_2R_{v_2}$
where, $R_{v_1}$ and $R_{v_2}$ are the volume flow rates for the two tanks
Therefore,
$\frac{R_{v_1}}{R_{v_2}}=\frac{\rho_2}{\rho_1}$
or, $\boxed{\frac{R_{v_1}}{R_{v_2}}=\frac{1}{2}}\;\;\;\;[\because\;\frac{\rho_1}{\rho_2}=2]$
