document.write( "Question 900343: 51 coins. Some are 10$ coins and the rest are 20$ coins. The total of all the coins is 750$. How many of each does he have \n" ); document.write( "
Algebra.Com's Answer #545906 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
20x + 10(51-x) = 750
\n" ); document.write( " 10x = 750 - 510
\n" ); document.write( " 10x = 240
\n" ); document.write( " x = 24, 20$ coins and 27, 10$coins
\n" ); document.write( "And...
\n" ); document.write( " 480 + 270 = 750
\n" ); document.write( "
\n" );