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Solving Percent Problems Using a Pyramid Grid

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Students use the pyramid method to solve percent problems. The pyramid grid provides a visual way to set up the equation.

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Posted by ScarLet SraDha on 6/27/2016 9:50:04 AM Votes 0.00 Thumps Up Thumps Down

A is an alloy of tin & copper & B is an alloy of copper & zinc.A has 30% copper while B has 50% copper,x grams of A mixed with 30 grams of B to form another ally has 45% copper.what is value of x ?

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Posted by Justin Kj on 1/17/2018 11:15:14 PM Votes 0.00 Thumps Up Thumps Down

A is an alloy of tin & copper & B is an alloy of copper & zinc.A has 30% copper while B has 50% copper,x grams of A mixed with 30 grams of B to form another ally has 45% copper.what is value of x ?

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BUT!! 12/48 <> 25!!

For this to work as shown, the percentage, if given, needs to be expressed as a fraction (or the fraction found, in this case 1/4, needs to be converted to a percentage).

Posted by malkie on 6/13/2016 8:54:40 PM Reply

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