lake profondo has a depth of 84 feet. lake segundo is 5/6 as a deep what is the elevation at the bottom of the lake segundo 

To find the depth of lake segundo, which is 5/6 as deep as lake profondo, you can multiply the depth of lake profondo by 5/6.

Depth of lake segundo = (5/6) * Depth of lake profondo

Depth of lake segundo = (5/6) * 84 feet

Depth of lake segundo = (5 * 84) / 6 feet

Depth of lake segundo = 420 / 6 feet

Depth of lake segundo = 70 feet

Therefore, the elevation at the bottom of lake segundo is 70 feet.