document.write( "Question 1121179: roxanne has P4.65 in 5 cents and 25 cents. The number of 25 cents coins is 1 more than twice the number of nickels (5 cents). How many quarters (25 cents) she has? \n" ); document.write( "

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\n" ); document.write( "roxanne has P4.65 in 5 cents and 25 cents. The number of 25 cents coins is 1 more than twice the number of nickels (5 cents). How many quarters (25 cents) she has?
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Let number of nickels and quarters be N and Q, respectively
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document.write( "We then get: .05N + .25Q = 4.65
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document.write( "                N + 5Q = 93 ------- Multiplying by 20 
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document.write( "                N = 93 - 5Q ------- eq (i)\r
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document.write( "Also, Q = 2N + 1 ------ eq (ii)
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document.write( "      Q = 2(93 - 5Q) + 1 ---- Substituting 93 - 5Q for N in eq (ii)
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document.write( "      Q = 186 - 10Q + 1
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document.write( "      Q + 10Q = 187
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document.write( "      Q, or number of quarters =  \n" );
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