Answer
$0.277\frac{L}{min}$
Work Step by Step
We have: $y=\frac{Q}{D}$ $Q=233,D=41, dD=-2u\frac{u}{min},dQ=0$
so $dy=\frac{(D(dQ)-Q(dD))}{D^2}$
$dy=\frac{(41(0)-233(-2))}{41^2}=0.277\frac{L}{min}$
Thus, the final answer is: $0.277\frac{L}{min}$