document.write( "Question 952042: when asked how many pennies she had, a collector said:
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document.write( "If I arrange them in attacks of 5, none are left over.
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document.write( " If I arrange then in stacks of 6, none are left over.
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document.write( " If I arrange them in stacks of 7, one is left over.
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document.write( "what is the least number of coins she could have? explain your answer \n" );
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Algebra.Com's Answer #581429 by JulietG(1812) You can put this solution on YOUR website! Since we're looking for least, let's start at the beginning. \n" ); document.write( "We know that it will be a multiple of 5 and 6. 5*6=30, so a multiple of 30. \n" ); document.write( "30,60,90,120,150,180,210 \n" ); document.write( "Does 7 go into any of those with 1 remainder? \n" ); document.write( "30/7 = 4 r 2 \n" ); document.write( "60/7 = 9 r 4 \n" ); document.write( "90/7 = 12 r 6 \n" ); document.write( "120/7 = 17 r 1 \n" ); document.write( " |