About related rates One leg of a right triangle decreases at 1cm/min and the other leg increases at 2cm/min. At what rate is the area changing when the first leg is 8cm and the second leg is 6cm

$A = \frac 12 xy\\\ x = 8, y = 6\\\ A = 24$

$\frac {dA}{dt} = \frac 12 (y \frac{dx}{dt} + x\frac{dy}{dt})$

$\frac {dx}{dt}, \frac {dy}{dt}$ is given.