Physics Question from JEE Main 2025 · 29 January, Shift 2

A physical quantity $Q$ is related to four observables $a$, $b$, $c$, and $d$ as follows:

$$Q = \frac{ab^4}{cd}$$

where $a = (60 \pm 3) \, \text{Pa}$; $b = (20 \pm 0.1) \, \text{m}$; $c = (40 \pm 0.2) \, \text{N s m}^{-2}$ and $d = (50 \pm 0.1) \, \text{m}$, then the percentage error in $Q$ is $\frac{x}{1000}$, where $x =$ _____.