tag:blogger.com,1999:blog-18322056.post2484293439280786573..comments2024-03-22T06:46:20.694-04:00Comments on Homeschool Math Blog: Bar diagram problemUnknownnoreply@blogger.comBlogger4125tag:blogger.com,1999:blog-18322056.post-48357651010855544052008-09-28T17:32:00.000-04:002008-09-28T17:32:00.000-04:00The answer to this word problem is posted here.The answer to this word problem is <A HREF="http://homeschoolmath.blogspot.com/2008/09/algebra-problem.html" REL="nofollow">posted here</A>.Maria Millerhttps://www.blogger.com/profile/00230743954246449727noreply@blogger.comtag:blogger.com,1999:blog-18322056.post-69934513233636995052008-09-28T05:14:00.000-04:002008-09-28T05:14:00.000-04:00Hi Teacher, Really appreciate if you can facili...Hi Teacher,<BR/><BR/> Really appreciate if you can facilitate to solve this crazy, killer maths problem sum. This question was set in one of the renowned primary school from Singapore.<BR/><BR/>The question goes like this:<BR/><BR/>Andy has $200 more than Peter. Andy gives 60% of his money to Peter. Peter then gives 25% of his money to Andy. In the end, Peter has $200 more than Andy. How much did Andy have at first?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-18322056.post-17806070093361942172008-09-03T16:19:00.000-04:002008-09-03T16:19:00.000-04:00Although it may seem as though you need to have a ...Although it may seem as though you need to have a thorough understanding of this problem to draw the bars, that is backwards. Bar modeling is a strategy that should help you solve the problem. <BR/><BR/>To solve this problem, I would draw a diagram, working with the "after" information first. Then working backwards, it becomes easier to visualize.<BR/><BR/>The diagram of the final ratio of 4:1 (four boxes to one box-sorry I can't draw pictures in the comments)doubles to become 8:2. With a bar diagram, I know that 6 equal boxes are represented by the 480 more oranges (I can see the 8-2 easily this way!). Each box equals 480/6 or 80 (either pears or oranges).<BR/><BR/>Looking at my drawing, I see that the beginning number of pears is equal to 2 boxes, therefore 2 x 80 = 160 pears.Anonymoushttps://www.blogger.com/profile/01239123267984420065noreply@blogger.comtag:blogger.com,1999:blog-18322056.post-17182994136562691522008-08-19T16:05:00.000-04:002008-08-19T16:05:00.000-04:00Thank YOU!!! -LinThank YOU!!! -LinLinhttps://www.blogger.com/profile/08268596284441252320noreply@blogger.com