Test Error in Exercise "Book Store" about csharp HOT 3 CLOSED

@cmccandless are you talking about this readme?

If so, the Readme calls out two different groupings for the eights books, and you need to choose the cheaper one. If you're getting 51.60 it's probably because you're using a greedy algorithm and the greedy algorithm doesn't always work in this problem :)

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Copying the relevant part of the readme for your convenience:

However, a different way to group these 8 books is:

1 group of 4 books --> 20% discount (1st,2nd,3rd,4th)
+1 group of 4 books --> 20% discount (1st,2nd,3rd,5th)
This would give a total of:

4 books at a 20% discount
+4 books at a 20% discount
Resulting in:

4 x (8 - 1.60) == 4 x 6.40 == $25.60
+4 x (8 - 1.60) == 4 x 6.40 == $25.60
For a total of $51.20

And $51.20 is the price with the biggest discount.

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Ah, that's what I get for trying to code before coffee; I misunderstood that part of the readme. My mistake.

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