document.write( "Question 864946: The ratio of their ages of Elton and David is 3:5. In 6 years time the ratio of their ages will be 3:4. How old is David?
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Algebra.Com's Answer #521392 by dkppathak(439)![]() ![]() You can put this solution on YOUR website! The ratio of their ages of Elton and David is 3:5. In 6 years time the ratio of their ages will be 3:4. How old is David? \n" ); document.write( "let present ratio of age ofelton and david age is =3x/5x \n" ); document.write( "as per given conditions after 6 yrs \n" ); document.write( "3x+6/5x+=3/4 \n" ); document.write( "4(3x+6)=3(5x+6) \n" ); document.write( "12x + 24=15x +18 \n" ); document.write( "12x-15x=18-24 \n" ); document.write( "-3x=-6 \n" ); document.write( "x=2 \n" ); document.write( "age of elton is 3x=3x2=6yrs \n" ); document.write( "age of david is 5x=5x2=10\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Answer David age present is 10 yrs \n" ); document.write( " |