Correcting myself...he would be out $18 for the cost he paid for the jacket. Add that to the $79 and he would be $97 in the hole.
The $100 borrowed and returned to neighbor is awash. Total loss is: Cost of Jacket = $18 Change given to counterfeiter = $79 $97. Pretty simple... unless you're watching a stros game at the same time.
Want to really feel dumb? Here is an example of an math entrance exam to get into college in China versus one for Great Britain (which would be similar to one in America). http://news.bbc.co.uk/2/hi/uk_news/education/6589301.stm Mathematicians set Chinese test Maths enthusiasts are being challenged to answer a sample question from Chinese university entrance tests. The tests are set for prospective science undergraduates. The UK's Royal Society of Chemistry is offering a £500 prize to one lucky but bright person who answers the question below correctly. It has also published a test used in a "well known and respected" English university - the society is not naming it - to assess the strength of incoming science undergraduates' maths skills. Try the two tests A glance at the two questions reveals how much more advanced is the maths teaching in China, where children learn the subject up to the age of 18, the society says. Schools and students are reluctant to consider A-level mathematics to age 18, because the subject is regarded as difficult Richard Pike Pupils 'urged to drop maths' Science undergraduates in England are likely not to have studied maths beyond GCSE level at the age of 16, it says. It has sounded a warning about Britain's future economic prospects which it claims are threatened by competition from scientists in China. RSC chief executive Richard Pike says mathematics is seen as integral to the sciences in China and its economy. "There, the concept of remedial courses at university would be inconceivable. "UK chemistry departments are often world-renowned for their creativity; however, mathematics tests set in England by many universities for undergraduate chemistry students in their first term to diagnose remedial requirements are disconcertingly simple. "They encapsulate the challenge facing this country," says Dr Pike. But a maths professor in England, William Shaw, has said the emphasis in mathematics teaching varies from country to country and the RSC's attack is "nonsense". Anyone wishing to enter the competition should go to the RSC website and send the correct answer by Friday 27 April to be included in a prize draw.
Now that I think about it ... He had a $100 bill that turned out to be a counterfeit so he lost $100. That is a better answer.
Agreed. Most simple and correct explanation. Gotta keep the transactions separate to find the real answer.
Think of this in another way. Let's say he starts with: a real $100 bill, $18 dollars jacket. He gets $100 in counter fit, so pretend it's not real. Current worth = $118 He borrows $100 from the store owner. Current worth = $218 He gave $79 and the $18 jacket away. Current worth = $121. He gave the store owner the $100 dollar back. Current worth = $21. ------------------------------------------------------------ So in the end, he started with $118 in asset and ends up with $21, net loss of $97.
Them are geometry questions, who uses geometry besides architects? Show me some algebra and calculus.
i visit clutchfans to get away from this kind of stuff.... whats with all these math problems anyways?
As a math major/grad student, it is kind of startling to see the difference in the level of education in mathematics from country to country. Math is the study of a language for the universe. However, being illiterate in math isn't considered as big of a deal while those illiterate in English are usually regarded much worse. Answer is 197 btw.
There are two transactions. And they are independent of each other. The transaction between the two shopkeepers is a neutral transaction involving no gain or loss (akin to borrowing 100 & returning 100). I'm ignoring it. The only transaction that matters is receiving $0 (counterfeit money) in exchange for giving out $79.00 real cash + merchandise that had a real cost of $18. so correct total loss is 97.00.
Lets look at simply by seeing what the the other players got. The shop keeper that gave change got nothing because he gave 100 and 100 back. The thief got 79 dollars and a jacket worth 18 bucks. 97 is the answer.
The good(?) thing about Math Word Problems like this: they require literacy in both Math and English.
