In an experiment four quantities a, b, c and d are measured with percentage error 1%, 2%, 3% and 4% respectively. Quantity P is calculated as…

In an experiment four quantities $\displaystyle a, b, c$ and $\displaystyle d$ are measured with percentage error $\displaystyle 1$%, $\displaystyle 2$%, $\displaystyle 3$% and $\displaystyle 4$% respectively. Quantity P is calculated as follows : $$\mathrm{P}=\frac{a^3 b^2}{c d} $$ % error in P is :