document.write( "Question 361251: a stack of pennies and dimes has a total value as $2.31. how many dimes are in the stack if there are twice as many dimes as pennies?
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Algebra.Com's Answer #257644 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi, 
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document.write( "Let x represent the number of pennies, then 2x represents the number of dimes
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document.write( "x + 10*2x = 231 cents
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document.write( "solve for x
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document.write( "21x = 231 
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document.write( "x = 11 the number of pennies
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document.write( "2*11 = 22 the number of dimes
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document.write( "checking our answer
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document.write( "11 cents + 220 cents = 231 cents = $2.31\r
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