Brain Teasers
Profit
I will sell you 4 CD's for £15 or 7 CD's for £24. I don't mind which as I make the same profit on either deal.
Today I sold 26 CD's. How much profit did I make?
Today I sold 26 CD's. How much profit did I make?
Answer
£15.If you write your info out as an equation:
7 CD's + profit = £24
- 4 CD's + profit = £15
_____________________
3 CD's = £9
you see that each CD costs £3. So 4 CD's cost £12 and my profit is £3. I said I make the same on either deal.
The only way I can sell 26 CD's is by 5 deals (3@4CD's & 2@7CD's). Making £3 on each means total profit is £15.
Hide Answer Show Answer
What Next?
View a Similar Brain Teaser...
If you become a registered user you can vote on this brain teaser, keep track of which ones you have seen, and even make your own.
Solve a Puzzle
Comments hidden to avoid spoilers.
Follow Braingle!