Academic journal article ABA Banking Journal

Sleight of Mind

Academic journal article ABA Banking Journal

Sleight of Mind

Article excerpt

Our "Weighing In" puzzle in January brought quite a number of correct responses. Proves that when bankers think about gold, they know what to do with it! First correct reply came from Richard M. Wright, senior vice-president, Downingtown National Bank, Downingtown, Pa.; next was George G. Terry, Jr. Univest Corporation of Pennsylvania, and, third, Richard Hughes, Commonwealth National Bank, St. Paul

We were looking for the heaviest of eight bags of gold coins a rare coin dearer shipped out. Below is the solution, short and concise, submitted by Manuel Arevalo, vice-president, Wachovia Bank, N.A, Summit, N.J.

"This is an easy one. Put three packages on each side of the scale. If they weigh the same, then compare the remaining two and find the heavier one in two weighings.

"If one of the two groups of three packages weighed earlier is heavier then the other, take two packages out of the heavy group. If one is heavier, you got it. If they weigh the same, then the third package in the group is the heavier one. In either case you got it in two weighings."

David Newcomer, Sunflower Bank, Salina, Kan., wrote: "This puzzle brought back good memories of that balance scale in high school science and those little gold weights with the little nub on top for a handle. …

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