document.write( "Question 29327: A wife and husband, Linda and Mark, have ages that total 80 years. Two years ago, 2 times Mark's age was 2 years more than 3 times Linda's age. How old is each now? \n" ); document.write( "
Algebra.Com's Answer #16122 by sdmmadam@yahoo.com(530)![]() ![]() ![]() You can put this solution on YOUR website! A wife and husband, Linda and Mark, have ages that total 80 years. Two years ago, 2 times Mark's age was 2 years more than 3 times Linda's age. How old is each now? \n" ); document.write( "Let Linda's age be L years \n" ); document.write( "and let Mark's age be M year. \n" ); document.write( "Linda and Mark, have ages that total 80 years. \n" ); document.write( "That is L+M = 80 ---(1) \n" ); document.write( "Two years ago Linda was (L-2) years old \n" ); document.write( "and Mark was (m-2)years old \n" ); document.write( "Then 2 times Mark's age was 5 years more than 3 times Linda's age \n" ); document.write( "That is 2(M-2)= 3(L-2)+2 ----(2) \n" ); document.write( "That is 2M-4=3L-6+2 \n" ); document.write( "2M-3L= 4-6+2 \n" ); document.write( "2M-3L= 0 ----(*) \n" ); document.write( "using (1) and substituting for L=(80-M)in (*) \n" ); document.write( " 2M-3(80-M) =0 \n" ); document.write( "2M-240-3M= 0 \n" ); document.write( "2M+3M= 240 \n" ); document.write( "5M=240 \n" ); document.write( "M= 240/5 = 48 \n" ); document.write( "L= 80 - 48 = 32 \n" ); document.write( "Answer: Mark is now 48 years old and Linda is 32 years old \n" ); document.write( "Verification: Two years ago,M= (48-2) = 46 and L= (32-2) = 30 \n" ); document.write( "Twice (46) should be 2 more than thrice(30) \n" ); document.write( "that is 92 should be 2 more than 90 which is so \n" ); document.write( "Hence their ages are correct. \n" ); document.write( " |