Half of the pillar is under the earth, one third of it is within water and 12 feet is above water. What is the length of pillar?
A
72 feet
B
80 feet
C
60 feet
D
84 feet
Correct Answer: 72 feet
Let the length of pillar is x 1/2 of the pillar under earth = x*1/2 = x/2 1/3 of it's within water = x/2* 1/3 = x/6A.Q, x/6 = 12x = 72 (length of pillar)