document.write( "Question 178041: Conrad has a collection of three types of coins: nickels, dimes and quarters. There are five more nickels than quarters but four times as many dimes as quarters. If the entire collection is worth $5.85, how many nickels, dimes, and quarters are there? \n" ); document.write( "
Algebra.Com's Answer #133105 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Conrad has a collection of three types of coins: nickels, dimes and quarters. \n" ); document.write( " There are five more nickels than quarters but four times as many dimes as \n" ); document.write( " quarters. If the entire collection is worth $5.85, how many nickels, dimes, \n" ); document.write( " and quarters are there? \n" ); document.write( ": \n" ); document.write( "let n, d, and q = no. of each coin \n" ); document.write( ": \n" ); document.write( "Write an equation for each statement: \n" ); document.write( ":\" \n" ); document.write( "\" There are five more nickels than quarters\" \n" ); document.write( "n = (q+5) \n" ); document.write( ": \n" ); document.write( "\" but four times as many dimes as quarters.\" \n" ); document.write( "d = 4q \n" ); document.write( ": \n" ); document.write( "\" If the entire collection is worth $5.85, \" \n" ); document.write( ".05n + .10d + .25q = 5.85 \n" ); document.write( ": \n" ); document.write( "how many nickels, dimes, and quarters are there? \n" ); document.write( ": \n" ); document.write( "Using the first two equations, substitute for n and d in the total$ equation: \n" ); document.write( ".05(q+5) + .10(4q) + .25q = 5.85 \n" ); document.write( ": \n" ); document.write( ".05q + .25 + .4q + .25q = 5.85 \n" ); document.write( ": \n" ); document.write( ".05q + .4q + .25q = 5.85 - .25 \n" ); document.write( ": \n" ); document.write( ".7q = 5.60 \n" ); document.write( "q = \n" ); document.write( "q = 8 quarters \n" ); document.write( ": \n" ); document.write( "I'll let you find the number of nickels and dimes \n" ); document.write( "Check your solutions in the total$ equation \n" ); document.write( " |