document.write( "Question 1205868: Hi, So my question is:
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document.write( "A bag of lollies is shared. When shared equally among 4 people, there are 2 lollies left. When shared equally among 9 people, there are 5 lollies left. When shared equally among 7 people, there are 2 lollies left.
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document.write( "Determine the smallest possible number of lollies that could have been in the bag as well as the general solution.
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document.write( "I have tried a few different ways and get different answers.I either get 86 or 94. Can you help? Thank you \n" );
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Algebra.Com's Answer #842937 by ikleyn(52781)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "A bag of lollies is shared. When shared equally among 4 people, there are 2 lollies left. \n" ); document.write( "When shared equally among 9 people, there are 5 lollies left. When shared equally among 7 people, \n" ); document.write( "there are 2 lollies left. \n" ); document.write( "Determine the smallest possible number of lollies that could have been in the bag as well as the general solution. \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "86 is the correct answer, as you can easily check it ON YOUR OWN.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "94 is incorrect answer, as you can easily check it ON YOUR OWN.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "I do not understand, why do you panic, having a correct answer in your hands.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "You always can easily check it ON YOUR OWN if the answer is correct or not, \n" ); document.write( "if you do understand correctly the meaning of the problem.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "/////////////////////////\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " Edwin presented huge long solution, which may scare you. \n" ); document.write( " Therefore, I decided to post here my solution, which is a standard method \n" ); document.write( " for such problems and is much shorter.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "Let N be our number.\r\n" ); document.write( "\r\n" ); document.write( "Subtract 2 from N and consider the number N-2.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Since N gives the remainder 2 when is divided by 4 and by 7, we conclude that \r\n" ); document.write( "the number (N-2) is divided by 4 and by 7 with no remainder.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Hence, N-2 is divided by 4*7 = 28 (since 4 and 7 are relatively prime numbers).\r\n" ); document.write( "\r\n" ); document.write( "So, we can write N-2 = 28k, where \"k\" is some integer number.\r\n" ); document.write( "Hence, N = 28k + 2.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Therefore, we will consider the numbers of the form 28k+2 to find value of \"k\" such \r\n" ); document.write( "that 28k+2 gives the remainder 5 when is divided by 9.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Try some values k= 1, 2, 3, 4, 5 . . . .\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "It will not take long time, since k=3 just provides you the number N= 28*3+2 = 86,\r\n" ); document.write( "which gives the remainder 5 when is divided by 9.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "So, the number 86 is the ANSWER.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "Solved.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "......................\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "If you want to see many other similar (and different) solved problems, look into the lessons\r \n" ); document.write( "\n" ); document.write( " - The number that leaves a remainder 1 when divided by 2, by 3, by 4, by 5 and so on until 9\r \n" ); document.write( "\n" ); document.write( " - The number which gives remainder 4 when divided by 7, remainder 5 when divided by 8 and remainder 6 when divided by 9 \r \n" ); document.write( "\n" ); document.write( "in this site. \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "These problems are typical for this subject, and reading these lessons, \n" ); document.write( "you will get familiar with the basic methods.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Problems of this type are introductory into the subject on divisibility and remainders.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "In advanced Math circles/classes, students start learning this material at 4th grade. \n" ); document.write( "May be, it is too early, but learning it, let say, at 5th - 6th grade is just good time.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It is absolutely clear that 4th, 5th and even 6th grade student is not able to perceive long reasoning.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "But such a student should be able to easy perceive what is written in my post - it is why I wrote it here.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "\\\\\\\\\\\\\\\\\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Since Edwin continue this discussion, I'd like to answer on his very first point.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Edwin writes that \"Ikleyn believes trial and error is legitimate, but it isn't!\".\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " - No. It is not so.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "What I state is another statement: \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \"If trial and error produces the answer, which after checking \n" ); document.write( " is proven to be correct, then the answer is correct \n" ); document.write( " and the solution is legitimate.\"\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Edwin, it is not a good style to make a discussion \n" ); document.write( "by attributing me statements that I did not make, \n" ); document.write( "and then disproving these statements.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Such method of making discussion was known back in ancient Greece, \n" ); document.write( "and it has the name - which I do not want to pronounce here.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |