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You have 5 segments of a chain and you want to connect them together into one chain. It costs 5 cents to break a link, and 10 cents to weld it back together. What is the least it would cost to join the 5 segments together?

 Aug 23, 2019
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You have 5 segments of a chain and you want to connect them together into one chain. It costs 5 cents to break a link, and 10 cents to weld it back together. What is the least it would cost to join the 5 segments together?

 

In a row, I break and weld the second and fourth segments.

 

It costs \(2\times (5cents+10cents)=30cents\)

laugh  !

 Aug 24, 2019

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