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प्रश्न
Ajay is younger than Vijay by 5 years. Sum of their ages is 25 years. What is Ajay's age?
विकल्प
20
15
10
5
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उत्तर
10
Explanation:
Let Ajay's age be x years and Vijay's age be y years.
Ajay is younger than Vijay by 5 years.
y - x = 5 ...(I)
Sum of their ages is 25 years.
x + y = 25 ...(II)
Adding (I) and (II) we have
2y = 30
⇒ y = 15
x = 10
Thus, Ajay's age is 10 years.
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