anneinco Posted March 2, 2012 Share Posted March 2, 2012 I have a book around that is supposed help me through the Singapore bar model process but we recently moved and I can not locate it... We reached page 166 in cwp2 today and I know there is a way to solve problems 2 and 4 with the bar model but I am not sure I am on the right path or I lucked out. (3 is probably doable with a bar model too but she used fractions). The problem is: a bicycle has 2 wheels and a tricycle has 3 wheels. There are all together 11 bicycles and tricycles with a total of 28 wheels. How many bicycles and how many tricycles are there? Not sure how to transcribe here how I have it on paper, but I have for every bicycle and tricycle there are 5 wheels. In order to have 11, I would have 5 groups (each with 1 bike and 1 trike) with 1 unknown. The five groups equal 25 wheels, so the 11 must be a trike with 3 wheels. So 5 bikes and 6 trikes... Is this correct? Worked through just guessing and then figured this out and it appears to work for the two problems (2 and 4). Thanks for the help! Quote Link to comment Share on other sites More sharing options...
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