The present age of a father is equal to the square of the present age of his son. One year ago, the
of the father was 8 times the age of his son. Find their present ages.
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Answer:
Step-by-step explanation:
Let the present age of father be x and son be y
Age one year ago will be x-1 and y-1
x = y² -------------(1)
(x-1) = 8(y-1) ---------(2)
Substitute x = y² in (2)
y² - 1 = 8y -8
y²-8y + 7 = 0
y² - 7y -y +7 = 0
y(y-7) - 1(y-7) = 0
(y-1)(y-7) = 0
y=1 or 7
So y = 7 and x=49
Father's age = 49
Son's age = 7.
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Done.hope it helps u
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