31.
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At present, the ratio between the ages of Arun and Deepak is 4 : 3. After 6 years, Arun's age will be 26 years. What is the age of Deepak at present ?
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12 years
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15 years
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19 and half
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21 years
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Answer: Option B
Explanation:
Let the present ages of Arun and Deepak be 4x years and 3x years respectively. Then,
4x + 6 = 26
4x = 20
x = 5.
Deepak's age = 3x = 15 years.
