Jacob threw a rock into a lake from a bridge 124 feet above the river's surface. The rock sinks 81 feet below the river’s surface. What is the distance between the elevations?
To find the distance between the elevations, we need to add the distance above the river's surface (124 feet) and the distance below the river's surface (81 feet).
124 feet + 81 feet = <<124+81=205>>205 feet
Therefore, the distance between the elevations is 205 feet.
To find the distance between the two elevations, we need to subtract the depth of the rock sinking below the river's surface from the height of the bridge.
Distance between elevations = Height of bridge - Depth of rock sinking below the river's surface
Distance between elevations = 124 feet - 81 feet
Distance between elevations = 43 feet
Therefore, the distance between the elevations is 43 feet.