skip to main content




Puzzle ZNQV 



???

The local CD shop operates an unusual discount policy. The discount on the next purchase is worked out on the current purchase in the following way: for every whole pound spent you get 0.5% discount on the next purchase. For example, if you purchased £8.99 on the first purchase, you would then get a 4% discount on the next purchase and so on. You can make as many purchases as necessary.

You need to buy 7 CDs, costing, £11.50, £12.00, £12.00, £12.50, £13.00, £13.00 and £14.50 — what is the cheapest method of buying them?

Puzzle Copyright © Kevin Stone

workings answer print

Share Link — www.brainbashers.com/puzzle/znqv

 

Note: BrainBashers has a Dark Mode setting.