document.write( "Question 362495: Betty has 10 more dimes than quarters. If she has $3.45, how many coins does she have?\r
\n" );
document.write( "\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #258366 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Betty has 10 more dimes than quarters. If she has $3.45, how many coins does she have? \r \n" ); document.write( "\n" ); document.write( "--- \n" ); document.write( "d = q + 10 \n" ); document.write( "10d + 25q = 345 cents \n" ); document.write( "---- \n" ); document.write( "Substitute for \"d\" and solve for \"q\"; \n" ); document.write( "10(q+10) + 25q = 345 \n" ); document.write( "35q + 100 = 345 \n" ); document.write( "35q = 245 \n" ); document.write( "q = 7 (# of quarters) \n" ); document.write( "--- \n" ); document.write( "Since d = q+10, d = 17 (# of dimes) \n" ); document.write( "================ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |