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1. Lima is 10 years older than Rima. In 7 years time Lima will be twice as old as Rima. Find Lima's age now?
- A. 3
- B. 3
- C. 3
- D. 3
Answer: Option B
Explanation:
Let, now Lima's age be X years.
:. Rina's age is (X - 10) years
According to the question,
X + 7 = 2{(X - 10) + 7}
= > X + 7 = 2(X - 3)
= > X + 7 = 3X - 6
= > 2X - X = > 7 + 6
= > X = 13
:. Rina's age is (X - 10) years
According to the question,
X + 7 = 2{(X - 10) + 7}
= > X + 7 = 2(X - 3)
= > X + 7 = 3X - 6
= > 2X - X = > 7 + 6
= > X = 13
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