A physical quantity ' X ' is related to four measurable quantities ' $a$ ', ' $b$ ', ' $c$ ' and ' $d$ ' as $\mathrm{X}=\mathrm{a}^2 \mathrm{~b}^3 \mathrm{c}^{5 / 2} \mathrm{~d}^{-2}$. The percentage error in the measurement of 'a', 'b', 'c' and 'd' are $1 \%$, $2 \%, 2 \%$ and $4 \%$ respectively. The percentage error in measurement of quantity ' X ' is

In an experiment four quantities $\mathrm{p}, \mathrm{q}, \mathrm{r}$ and s are measured with percentage $3 \%, 2 \%, 3 \%$ and $1 \%$ respectively. Quantity ' $A$ ' is calculated as follows

$\mathrm{A}=\frac{\mathrm{pq}^2}{\mathrm{r}^2 \mathrm{~s}^4}$, the percentage error in ' A ' is

The error in the measurement of length and mass is $3 \%$ and $4 \%$ respectively. The error in the measurement of density will be