document.write( "Question 1023342: one bag contains 43 coins, coins are $2 and $5. find the number of coins of each denomination if there is $167 in total
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Algebra.Com's Answer #638872 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! Call the numbers of $2 and $5 coins, x and y. Then we write \n" ); document.write( "x + y = 43 and the value equation is \n" ); document.write( "2x + 5y = 167 \n" ); document.write( "Multiply the top one by two and subtract...we get \n" ); document.write( "2x + 5y = 167 \n" ); document.write( "-(2x + 2y = 86) \n" ); document.write( "----------------- \n" ); document.write( "3y = 81 \n" ); document.write( "y = 27 $5 coins and thus there are \n" ); document.write( "x = 16 $2 coins \n" ); document.write( " |