mathcalc: Paul has 2/3 as many postcards as Shawn. The number of postcards Shawn has is 3/5 of the number of postcards Tim has. If the three boys have 280 postcards altogether, how many post card s does Tim have than Paul?
Please no algebra! I haven't learned it yet.
You must be one of Jyoti's friends. I see that you have signed up. Welcome to web2.0calc.com
You are supposed to do this using a
Singapore Math Bar Model Method.
Let Paul have two equal sized boxes and go from there. you will put Shawn's boxes next to Pauls. How many boxes will that be? Last of all you put Tim's boxes.
Once you have worked out how many boxes you need altogether then you can work out how many postcards is in each box.
Then you can work out how many post cards that Tim and Paul have.
Try to do it yourself. You can post again and tell me how far you got.
+201 
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