document.write( "Question 840110: the sum of two digit no is 80 if the largest no exceed 4 times the smaller no by 5 then smaller no is \n" ); document.write( "

Algebra.Com's Answer #505932 by isma95fb(6) $\"\"$ $\"About$

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let number 1 = a
\n" ); document.write( "let number 2 = b
\n" ); document.write( "a + b = 80------(i)
\n" ); document.write( "assume a = largest number
\n" ); document.write( "a - 4b = 5------(ii)
\n" ); document.write( "using substitution
\n" ); document.write( "from eqn i b = 80 - a
\n" ); document.write( "a - 4(80 - a) = 5-------(ii)
\n" ); document.write( "a + 4a = 325
\n" ); document.write( "a = 65
\n" ); document.write( "hence b = 15
\n" ); document.write( "the smaller number is 15 \n" ); document.write( "

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