When Tom's father was 31 years old.Tom was 8 years old. Now, his father is twice Tom's age. How old is Tom now.
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Answer:
When Tom's father was 31 years old, Tom was 8 years old. Now, his father is twice Tom's age. How old is Tom now?
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When Tom father was 31 years old, then Tom was 8 year old.
Age difference between Tom father and him is
31 years - 8 years = 23 years
It means Tom father is 23 years older than him.
Let after x years Tom’s father is twice as old as he. Then
31 + x = 2 (8 + x)
31 + x = 16 + 2x
31 - 16 = 2x - x
15 = x
x = 15
So after 15 years, Tom will be 8 + 15 = 23 years. His father will be 31 + 15 = 46 years.
Answer Tom is 23 years now