SOLUTION: The sum of the ages of a father and son is 52. The difference their ages is 28, then the age of the father is....?
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Question 821758: The sum of the ages of a father and son is 52. The difference their ages is 28, then the age of the father is....?
Answer by jhunjiro(67) (Show Source): You can put this solution on YOUR website!
Let:
x - fathers age
y - sons age
Solution:
eq 1
eq 2
-
eq 3
-
substitute to eq 2
sons age
-
substitute to eq 3
fathers age
other solution is elimination method:
add eq 1 and eq 2 to eliminate the y then solve for x. then substitute the value of x to eq 1 or eq 2 to get the value of y.
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