After an ice began to melt out from the freezer, in the first hour lost 3/4, in the second hour lost 3/4 of its remaining. If after two hours, the volume is 0.2 cubic inches, what is the original volume of the cubic ice, in cubic inches?
Pick one: A) 2.5 B) 3.2 C) 4.0 D) 6.5 E) 8.0
Let initial volume of ice be = x   Ice Remaining after 1 hour = x - 0.75x = 0.25x   Ice Remaining after 2 hour = (1/4)x - (3/4 * 1/4 * x) = (1/16)x   (1/16)x = 0.2   x = 3.2   Alternate solution: Try to backsolve.   Initial volume = 3.2   After one hour --&gt; (1/4)3.2 = 0.8   After two hours --&gt; (1/4)0.8 = 0.2   Answer: 3.2
<result>B</result>
After an ice began to melt out from the freezer, in the first hour lost 3/4, in the second hour lost 3/4 of its remaining. If after two hours, the volume is 0.2 cubic inches, what is the original volume of the cubic ice, in cubic inches?