document.write( "Question 187480: Can you please help me with this problem and how you got to the answer. \r
\n" );
document.write( "\n" );
document.write( "A carpenter goes to a hardware store to buy a specific number of pounds of nails for his business. The first store he enters sells his favorite-sized nails at nine cents per pound. At this price, the carpenter realizes that he would be short $7.15 if he tried to buy the nails. The carpenter goes to a competing hardware store and finds the nails sell for six cents per pound. He realizes that after paying for the nails, he would have $2.45 left over. How many pounds of nails is he trying to buy?\r
\n" );
document.write( "\n" );
document.write( "Thanks :) \n" );
document.write( "
Algebra.Com's Answer #140518 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A carpenter goes to a hardware store to buy a specific number of pounds of nails for his business. \n" ); document.write( "-- \n" ); document.write( "Let # of pounds be \"x\" \n" ); document.write( "-------------------- \n" ); document.write( " The first store he enters sells his favorite-sized nails at nine cents per pound. At this price, the carpenter realizes that he would be short $7.15 if he tried to buy the nails. \n" ); document.write( "Let \"y\" be the money he has. \n" ); document.write( "9x = y + 715 \n" ); document.write( "------------------------------------- \n" ); document.write( "The carpenter goes to a competing hardware store and finds the nails sell for six cents per pound. He realizes that after paying for the nails, he would have $2.45 left over. \n" ); document.write( "6x = y -245 \n" ); document.write( "----------------------------- \n" ); document.write( "How many pounds of nails is he trying to buy? \n" ); document.write( "----------- \n" ); document.write( "Rearrange the equations: \n" ); document.write( "y= 9x - 715 \n" ); document.write( "y = 6x + 245 \n" ); document.write( "---------------- \n" ); document.write( "Substitute to solve for \"x\": \n" ); document.write( "9x - 715 = 6x + 245 \n" ); document.write( "3x= 960 \n" ); document.write( "x = 320 lbs (# of pounds he is trying to buy) \n" ); document.write( "================================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |