A five-resistor bridge network is connected between terminals \(X\) and \(Y\). The upper branch consists of two resistors of resistance \(R_1 = 6.0\text{ }\Omega\) and \(R_2 = 12.0\text{ }\Omega\) in series. The lower branch consists of two resistors of resistance \(R_3 = 3.0\text{ }\Omega\) and \(R_4 = 6.0\text{ }\Omega\) in series. A bridging resistor of resistance \(R_5 = 10.0\text{ }\Omega\) connects the node between \(R_1\) and \(R_2\) to the node between \(R_3\) and \(R_4\). What is the equivalent resistance between terminals \(X\) and \(Y\)?