Problema Solution
There are four identical pieces of chain, each three links long. It costs 4cents to open a link and 5 cents to close one. Find the least cost to join all twelve links into a single circle.
A. 22 cents
B. 27 cents
C. 33 cents
D. 44 cents
Answer provided by our tutors
each chain will have 1 link open and 1 link closed this 4 + 5 = 9 cents are needed for each chain
since we have 3 chains the total will be:
3 * 9 = 27 cents.