document.write( "Question 936010: A man is 7 times as old as his son. In 8 years he will be only three times as old as his son .how old is the man now \n" ); document.write( "

Algebra.Com's Answer #569418 by srinivas.g(540) $\"\"$ $\"About$

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let age of son be x years
\n" ); document.write( "age of man is 7*x years
\n" ); document.write( " after 8 years , son's age will be x+8
\n" ); document.write( "after 8 years , man's age will be 7x+8
\n" ); document.write( "
\n" ); document.write( "In 8 years he will be only three times as old as his son
\n" ); document.write( " hence
\n" ); document.write( " 7x+8 = 3*(x+8)
\n" ); document.write( " 7x+8 = 3x+3*8
\n" ); document.write( " 7x+8 = 3x+24
\n" ); document.write( " move 3x to the left
\n" ); document.write( " 7x+8-3x= 24
\n" ); document.write( " 7x-3x+8 = 24
\n" ); document.write( " 4x+8 =24
\n" ); document.write( " move 8 to the right
\n" ); document.write( " 4x = 24-8
\n" ); document.write( " 4x = 16
\n" ); document.write( " divide with 4 on both sides
\n" ); document.write( " $\"+4x%2F4++=16%2F4\"$
\n" ); document.write( " x= 4
\n" ); document.write( "age of son (x)= 4 years
\n" ); document.write( " age of man (7x)= 7*4 =28 years
\n" ); document.write( "Result : age of man now = 28 years \n" ); document.write( "

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