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1. A father's age is 4 times his son's now. 20 years from now, the father's age will be double his son's age. What will be the son's age 10 years from now?
- A. 20
- B. 20
- C. 20
- D. 20
Answer: Option A
Explanation:
Let's son's Age = x
Fathers Age = 4x
4x + 20
2 ( x + 20)
2x = 20
x = 10
10 + 10 = 20
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