ten years ago a man was …
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Rajeev Malhotra 6 years, 5 months ago
Let man's present age = x and His son's present age = y
10 years ago , men's age was = x-10
10 years ago , His son's age was= y-10
According to given condition . we have
x -10 = 8(y-10)
x-10= 8y-80
x -8y -10 +80 = 0
x -8y +70 = 0
this is the required equation.
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