document.write( "Question 131374: The difference between two numbers is 18. 5 times the larger number is 2 times the smaller number. Find the two numbers. \n" ); document.write( "
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SOLUTION -
\n" ); document.write( " Let the larger number be x
\n" ); document.write( " and smaller number be y
\n" ); document.write( " therefore according to the first condition that is,\"the difference between two numbers is 18\" we have
\n" ); document.write( "
\n" ); document.write( " x - y = 18
\n" ); document.write( " x = 18 + y .............. (i)\r
\n" ); document.write( "\n" ); document.write( " now according to the second condition we have five times the greater is equal to 2 times the smaller, we have\r
\n" ); document.write( "\n" ); document.write( " 5x = 2y
\n" ); document.write( " 5x = 2y\r
\n" ); document.write( "\n" ); document.write( " substituting the value of x from equation (i)we have
\n" ); document.write( " 5(18 + y) = 2y
\n" ); document.write( " 90 + 5y = 2y
\n" ); document.write( " 5y - 2y = -90
\n" ); document.write( " 3y = - 90
\n" ); document.write( " y = -90/3
\n" ); document.write( " y = - 30 \r
\n" ); document.write( "\n" ); document.write( "now substituting the value of y in equation (i) we have
\n" ); document.write( " x = 18 + (-30)
\n" ); document.write( " x = 18 - 30
\n" ); document.write( " x = -12
\n" ); document.write( "
\n" ); document.write( " therefore
\n" ); document.write( " larger number is x = -12
\n" ); document.write( " and smaller number is y = -30\r
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