# Math Help - Find three positive real numbers whose sum is 28 and whose product is a maximum.

1. ## Find three positive real numbers whose sum is 28 and whose product is a maximum.

Find three positive real numbers whose sum is 28 and whose product is a maximum. List them in ascending order. , ,

2. Here's a start

$x+y+z=28$

$(xyz)' = 0$

$x,y,z \in \mathbb{R}^+$