document.write( "Question 174469: the sum of ages of two brothers is 24 in three years time, the elder brother will be twice as old as younger. how old are they ? \n" ); document.write( "
Algebra.Com's Answer #129454 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! the sum of ages of two brothers is 24. \n" ); document.write( "a + b = 24 \n" ); document.write( "----------------------------- \n" ); document.write( "in three years time, the elder brother will be twice as old as younger. \n" ); document.write( "(a+3) = 2(b+3) \n" ); document.write( "----------------------------- \n" ); document.write( "how old are they ? \n" ); document.write( "EQUATIONS Rearranged \n" ); document.write( "a + b = 24 \n" ); document.write( "a -2b = 3 \n" ); document.write( "------------ \n" ); document.write( "Subtract the 2nd from the 1st to get: \n" ); document.write( "3b = 21 \n" ); document.write( "b = 7 yrs. old (Younger brother's age) \n" ); document.write( "------ \n" ); document.write( "Since a + b = 24 , a = 24-7 = 17 yrs. old (older brother's age) \n" ); document.write( "============================================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |