document.write( "Question 981763: Two negative integers are in the ratio 4 to 5. If the larger of the numbers is -40, what is the average of the two numbers? \n" ); document.write( "
Algebra.Com's Answer #602707 by lmeeks54(111)![]() ![]() You can put this solution on YOUR website! First write down what you know and think about what the question is asking you, then figure it out. Simple, right? \n" ); document.write( "... \n" ); document.write( "What we Know: \n" ); document.write( "Both are negative integers \n" ); document.write( "Ratio of the integers is 4 to 5 (= 4/5) \n" ); document.write( "Largest is -40 \n" ); document.write( "... \n" ); document.write( "What we are to find out: \n" ); document.write( "What is the average of the two integers? \n" ); document.write( "...\r \n" ); document.write( "\n" ); document.write( "... \n" ); document.write( "The part of both being negative is pretty straightforward. Ignore that for now \n" ); document.write( "... \n" ); document.write( "Ratio of 4/5 \n" ); document.write( "4/5 \n" ); document.write( "8/10 \n" ); document.write( "16/20 \n" ); document.write( ". . . \n" ); document.write( "40/50; these all have the same ratio. So would -40/-50. Of course, that would too easy. -40 is our largest integer, not our smallest \n" ); document.write( "... \n" ); document.write( "One easy way to solve these ratio problems is to set up an equality with what you know and then solve for the missing integer by cross-multiplying: \n" ); document.write( "... \n" ); document.write( " 4 X \n" ); document.write( "--- = --- \n" ); document.write( " 5 -40 \n" ); document.write( "... \n" ); document.write( "(4 x -40) = 5X \n" ); document.write( "... \n" ); document.write( "Divide both sides by 5 to solve for X \n" ); document.write( "... \n" ); document.write( "(4 x -40)/5 = X \n" ); document.write( "... \n" ); document.write( "-160/5 = X \n" ); document.write( "... \n" ); document.write( "-32 = X \n" ); document.write( "... \n" ); document.write( "Does this make sense? \n" ); document.write( "... \n" ); document.write( "Now to solve the final question: the average of the two integers: \n" ); document.write( "... \n" ); document.write( "(-40 + -32)/2 = -72/2 = -36 \n" ); document.write( "... \n" ); document.write( "The answer to the problem is -36 \n" ); document.write( "... |