Linear Equations in One Variable
15. A man is 4 times as old as his son. After 16 years he will be only twice as old as his son.
old as his son.
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Answer:
let age of son is x years
so age of father is 4x years
after 16 years
age of son = x + 16
Father age = 4x + 16
According to statement
4x + 16 = 2(x + 16)
4x + 16 = 2x + 32
2x = 16
x = 8
so son age = 8 years
father age = 32 years
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