Use the equation(s) 392 x 20% OR 392 x 0.20 ----------------------------------------------- 392 x 20% = 78.4 ------------------------------------------------------------ 78.4 is your answer
Stefano is at +10 elevation while the hiker is at -166.4 elevation. The difference would be 10 - (-166.4) = 10 + 166.4 = 176.4 or approximately 176 meters
