Harmonica Posted April 5, 2005 Share Posted April 5, 2005 Fellas, I'm going to hit you with 10 levels; here then is Level 2. A customer at a 7-11 store selected four items to buy, and was told that the cost was $7.11. He was curious that the cost was the same as the store name, so he enquired as to how the figure was derived. The clerk said that he had simply multiplied the prices of the four individual items. The customer protested that the four prices should have been added , not multiplied . T The clerk said that that was OK with him, but, the result was still the same: exactly $7.11. What were the four prices? Link to comment Share on other sites More sharing options...
ProfessorFart Posted April 5, 2005 Share Posted April 5, 2005 3, no wait............4, no hold on a minute............no, 13,000 I think. Link to comment Share on other sites More sharing options...
Khun Jean Posted April 5, 2005 Share Posted April 5, 2005 Took me a while 1.25, 1.20, 1.50 and 3.16 Link to comment Share on other sites More sharing options...
Harmonica Posted April 5, 2005 Author Share Posted April 5, 2005 Took me a while 1.25, 1.20, 1.50 and 3.16 Yep, that is correct! Link to comment Share on other sites More sharing options...
ProfessorFart Posted April 5, 2005 Share Posted April 5, 2005 Yeah!! Got it! £345.15 Oh no! Wait!! is it 1.25, 1.20, 1.50 and 3.16? Link to comment Share on other sites More sharing options...
aughie Posted April 5, 2005 Share Posted April 5, 2005 They were all the same item so it wasn't necessary to add them up you can multiply by four! Oh no wait... Link to comment Share on other sites More sharing options...
penelope Posted April 6, 2005 Share Posted April 6, 2005 Took me a while 1.25, 1.20, 1.50 and 3.16 <{POST_SNAPBACK}> can you post the mathmatical proof ? or did you use brute force clue : use simultaneous equations !! Link to comment Share on other sites More sharing options...
RDN Posted April 6, 2005 Share Posted April 6, 2005 Took me a while 1.25, 1.20, 1.50 and 3.16 <{POST_SNAPBACK}> can you post the mathmatical proof ? or did you use brute force clue : use simultaneous equations !! <{POST_SNAPBACK}> Better clue: use simultaneous Googling: http://math.ucsd.edu/~mathclub/games/brain...ry_slurpee.html Link to comment Share on other sites More sharing options...
paulfr Posted April 7, 2005 Share Posted April 7, 2005 (edited) ooops Edited April 7, 2005 by paulfr Link to comment Share on other sites More sharing options...
RDN Posted April 7, 2005 Share Posted April 7, 2005 ooops <{POST_SNAPBACK}> Don't worry - I nearly posted that answer too Link to comment Share on other sites More sharing options...
tuky Posted April 8, 2005 Share Posted April 8, 2005 Moved to the new Jokes and Puzzles forum /admin/mods Link to comment Share on other sites More sharing options...
Khun Jean Posted April 8, 2005 Share Posted April 8, 2005 can you post the mathmatical proof ? or did you use brute force Brute force. But with a few boundaries. Everything added is 7.11. That maximizes the search for numbers. Multiplying 7.11 times hundred will help. Makes calculations a lot simpler. As it are 4 numbers multiplied together you can find factors. One of them is 79 or 158 or 237 or 316. Small routine in a calculator or computer and a second later you have the solution. Link to comment Share on other sites More sharing options...
.png.3b3332cc2256ad0edbc2fe9404feeef0.png)
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now