The correct solution is, Solution (3) and the number we are looking for is 24.
A word problem was popped up in a tutoring session, it was looking for a number with certain information given in the question. There were several different solutions due to how to understand the sentence. This is the grammar related skills which is a key to solve word problems correctly.
Here, I create a similar word problem, with eight solutions, in which only one solution is correct. I will post the right solution after tomorrow (On Thursday).