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The hammock problem

The hammock problem

Miss Carrie has broken her hammock that was suspended between two trees. From the beginning that says that a chain is not stronger than the weakest of its links, she ensures that it is possible to guess its weight by discovering the minimum number of ropes that we have to cut to divide the hammock into two pieces that contain the same number of rope segments. She says that each rope is capable of supporting exactly 10 pounds. Knowing this,

How much does Miss Carrie weigh?

Keep in mind that it is not possible to cut the joints between ropes.

Solution

When Miss Carrie fell from the hammock she had to weigh 120 pounds since this is the minimum number of ropes of the hammock that we must cut to divide it into two parts, as shown in the illustration.