document.write( "Question 812078: I am doing homework the problem is....\r
\n" ); document.write( "\n" ); document.write( "A Jar contains 21 nickels and dimes The total value of money inside the jar is $1.70. How many nickels and dimes are there?\r
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\n" ); document.write( "\n" ); document.write( "I am not understanding how to convert it into 2 different equations.\r
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Algebra.Com's Answer #489030 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
let n = no. of nickels
\n" ); document.write( "let d = no. dimes
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\n" ); document.write( "Write an equation for each statement
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\n" ); document.write( "A Jar contains 21 nickels and dimes
\n" ); document.write( "n + d = 21
\n" ); document.write( "n = (21-d); use this form for substitution
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\n" ); document.write( "The total value of money inside the jar is $1.70.
\n" ); document.write( ".05n + .10d = 1.70
\n" ); document.write( "Substitute (21-d) for n
\n" ); document.write( ".05(21-d) + .10d = 1.70
\n" ); document.write( "1.05 - .05d + .10d = 1.70\
\n" ); document.write( "-.05d + .10d = 1.70 - 1.05
\n" ); document.write( ".05d = .65
\n" ); document.write( "d = .65/.05
\n" ); document.write( "d = 13 dime
\n" ); document.write( "I'll let you find the number of nickels
\n" ); document.write( "Check your solutions in the 2nd equation \r
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\n" ); document.write( "\n" ); document.write( "How many nickels and dimes are there?
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