Jackson is three times as heavy as Andrew. If the sum of their weight is \(360\) pounds, find Andrew's weight.

A 90 pounds.

explanation

Let Andrew's weight be \(x\). Jackson's weight is three times Andrew's weight, or \(3x\).
Set up an equation equal to 360 pounds.
\(x + 3x = 360\)
\(4x = 360\)
\(x = 90\) pounds