document.write( "Question 987383: The number of 5p coins in a money box is two less than three times the number of 10p coins. If the total value of the coins is £4.40, how many 5p coins are there in the box? \n" ); document.write( "
Algebra.Com's Answer #608130 by macston(5194)![]() ![]() You can put this solution on YOUR website! x=number of 5p coins; y=number of 10p coins=3x+2 \n" ); document.write( "5x+10y=440 \n" ); document.write( "5x+10(3x+2)=440 \n" ); document.write( "5x+30x+20=440 \n" ); document.write( "35x=420 \n" ); document.write( "x=12 \n" ); document.write( ". \n" ); document.write( "ANSWER: There are twelve 5p coins \n" ); document.write( ". \n" ); document.write( "CHECK: \n" ); document.write( "5x+10y=440 \n" ); document.write( "5(12)+10y=440 \n" ); document.write( "60+10y=440 \n" ); document.write( "10y=380 \n" ); document.write( "y=38 There are 38 10p coins. \n" ); document.write( ". \n" ); document.write( "y=3x+2 \n" ); document.write( "38=3(12)+2 \n" ); document.write( "38=36+2 \n" ); document.write( "38=38 \n" ); document.write( " |