SOLUTION: Mary is twice as old as Todd. In 8 years, their ages will total 70. How old is each now?
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Question 1044736: Mary is twice as old as Todd. In 8 years, their ages will total 70. How old is each now?
Found 2 solutions by josmiceli, MathLover1:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = Mary's age now
Let = Todd's age now
-------------------------
(1)
(2)
-----------------------
(2)
(2)
--------------------
substitute (1) into (2)
(2)
(2)
(2)
and
(1)
(1)
(1)
-----------------
Mary is 36
Todd is 18
------------
check:
(2)
(2)
(2)
(2)
OK
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
let Todd's age be
if Mary is twice as old as Todd, than Mary's age is
in years, Todd's age will be and Mary's age will be
if their ages will total , than
-> Todd's age
Mary's age
check:
their age in from now will be:
-> Todd's age
Mary's age
and their sum must be : which is true
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