SOLUTION: Please help me solve this problem:Your grandfather is 5 times as old as you. The sum of your ages is 72. Find the age of your grandfather. (Use elimination method)
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Question 855100: Please help me solve this problem:Your grandfather is 5 times as old as you. The sum of your ages is 72. Find the age of your grandfather. (Use elimination method)
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = your age
Let = your grandfather's age
-------------
(1)
(2)
---------------
Substitute (2) into (1)
(1)
(1)
(1)
and
(2)
(2)
(2)
----------------
the grandfather's age is 60
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