I have six sections of chain, each
consisting of four links. If the cost of cutting open a link is 10
cents, and of welding it together again, 25 cents, how much will
it cost me to have the six pieces joined into one chain?
Answer:
The cost is $1.40. The most economical plan is to cut open all four links of one section and use these four to join the five remaining sections together.
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