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Analyzing change (Posted on 2014-10-28) Difficulty: 3 of 5
In Dingistan the coins are of the following denomination:
SILVER: 10, 15, and 20 dingos
COPPER: 1, 2, and 3 dingos.
The ACMs (automatic change machines) accept silver coins and return change as follows:
20d=(15+2+2+1) d
15d=(10+2+2+1) d
10d=(3+3+2+2) d


After Dingus converted into copper the 145d he had in silver coins, his friend W.G.Ringus counted them and successfully reconstructed the original composition of silver coins, previously unknown to him.

It is up to you to find both the input and the output
- if the Wise Guy did it – you can do it, too.

It is D4, if solved analytically.

No Solution Yet Submitted by Ady TZIDON    
Rating: 3.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
re(2): Analytical solution (spoiler) (D2)Steve Herman2014-10-28 12:32:15
Solutioncomputer solutionCharlie2014-10-28 12:22:14
Hints/Tipsre: Analytical solution (spoiler) (D2)Ady TZIDON2014-10-28 11:49:46
SolutionAnalytical solution (spoiler) (D2)Steve Herman2014-10-28 11:04:57
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