document.write( "Question 1063779: the numbers are in the ratio of 3:4:5. If the middle number is 18 what is the sum of the 3 numbers?
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #678901 by math_helper(2461)![]() ![]() You can put this solution on YOUR website! 3:4 = x:18 —> 3/4 = x/18 —> x = 18*3/4 = 54/4 = 13.5 \n" ); document.write( "4:5 = 18:y —> 4/5 = 18/y —> y = 18*5/4 = 90/4 = 22.5\r \n" ); document.write( "\n" ); document.write( " 13.5:18:22.5 satisfies the ratio, and the sum is \n" ); document.write( "\n" ); document.write( "Or we could've just done: 18*3/4 + 18 + 18*5/4 = 54. \n" ); document.write( " |