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प्रश्न
Ram is half as old as Shyam, who is three times as old as Prakash. The sum of their ages is 55. How old is Ram?
विकल्प
5
8
10
15
MCQ
उत्तर
15
Explanation:
Let the age of prakash = a year
According to the question,
Age of Shyam = 3a yr
Age of Ram = `"3a"/2` yr
Now, given that the sum of their ages is 55.
∴ a + 3a + `"3a"/2` = 55
⇒ 8a + 3a = 110
⇒ 11 a = 110
∴ a = 10
Now, the age of Ram = `"3a"/2 = (3 xx 10)/2` = 15 yr
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