Half of the pillar is under the earth one third of it is under the water, and 12 feet is above the water, what is the length?
সমাধান
সঠিক উত্তর: Option A
Let, Total length =x
So,
Under the earth= x/2
Under the water=x/3
and, Above the water= 12
So,
x/2+x/3+12 =x
or, x/2+x/3-×=-12
or,-x=-72
or, x=72
