# SOLUTION: Marivic is 20 years older than Fe. Seven years from now , Marivic will be thrice as old as Fe. Find Their present ages

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 Question 252642: Marivic is 20 years older than Fe. Seven years from now , Marivic will be thrice as old as Fe. Find Their present ages Answer by ankor@dixie-net.com(15645)   (Show Source): You can put this solution on YOUR website!Write an equation for each statmente : Marivic is 20 years older than Fe. m = f + 20 : Seven years from now , Marivic will be thrice as old as Fe. m + 7 = 3(f+7) m + 7 = 3f + 21 m = 3f + 21 - 7 m = 3f + 14 Substitute (f+20) from the 1st statement: f + 20 = 3f + 14 20 - 14 = 3f - f 6 = 2f f = 3 yrs and m = 23 yrs : : Check solution in the statement: "Seven years from now , Marivic will be thrice as old as Fe. " 23 + 7 = 3(3 + 7)