document.write( "Question 305835: The sum of three number is 65. The first is twice the second. The third is the result obtained by subtracting 5 from the second. find the largest number. \n" ); document.write( "
Algebra.Com's Answer #219021 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Three numbers, x, y, z; (x is the largest) \n" ); document.write( "The sum of three number is 65. \n" ); document.write( "x + y + z = 65 \n" ); document.write( ": \n" ); document.write( " The first is twice the second. \n" ); document.write( "x = 2y \n" ); document.write( ": \n" ); document.write( " The third is the result obtained by subtracting 5 from the second. \n" ); document.write( "z = (y-5) \n" ); document.write( ": \n" ); document.write( "find the largest number. \n" ); document.write( ": \n" ); document.write( "Using the first equation, replace x with 2y and z with (y-5) \n" ); document.write( "2y + y + (y-5) = 65 \n" ); document.write( "4y = 65 + 5 \n" ); document.write( "4y = 70 \n" ); document.write( "y = \n" ); document.write( "y = 17.5 \n" ); document.write( "then \n" ); document.write( "x = 2(17.5) \n" ); document.write( "x = 35 is the largest number \n" ); document.write( "and \n" ); document.write( "z = 17.5 - 5 \n" ); document.write( "z = 12.5 \n" ); document.write( "; \n" ); document.write( ": \n" ); document.write( "Check solution \n" ); document.write( "35 + 17.5 + 12.5 = 65 \n" ); document.write( " |