Avscuba diver is 12 1/8 feet below sea level. If he descends 6 1/2 more feet, how many feet must the scuba diver rise to reach the surface?
12 1/8 + 6 1/2 = 12+6 + 1/8 + 1/2 = 18 5/8
A scuba diver is 75 feet below sea level. She then ascends 12.7 feet. What is the current depth of the scuba diver?
To find out how many feet the scuba diver must rise to reach the surface, we need to calculate the total distance the diver is below sea level (12 1/8 feet) and the distance the diver descends further (6 1/2 feet).
To find the total distance below sea level, we need to add the current distance (12 1/8 feet) and the additional descent (6 1/2 feet):
12 1/8 + 6 1/2 = (96/8 + 13/2) = (96/8 + 52/8) = 148/8 = 18 5/8 feet below sea level
Since the scuba diver is negative 18 5/8 feet below sea level, the distance the diver needs to rise to reach the surface is the absolute value of this distance:
|-18 5/8| = 18 5/8 feet
Therefore, the scuba diver must rise 18 5/8 feet to reach the surface.