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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 more postcards does Tim have
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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 more postcards does Tim have than Paul ?

User DrMarbuse
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We suppose that Tim has x postcards. So Shawn has 3/5x postcards and Paul has 2/3*3/5x=2/5x postcards. Then the total is x+3/5x+2/5x=2x=280. So the x=140 which means Tim has 140 postcards and Paul has 140*2/5=56 postcards. So the answer is 140-56=84.
User Martinaut
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