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प्रश्न
The ratio between the present ages of Madan and Kamal is 8 : 5 respectively. After eight years Madan's age will be 40 years. What was Kamal's age 6 years ago?
विकल्प
14 years
16 years
12 years
20 years
MCQ
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उत्तर
14 years
Explanation:
Let the present ages of Madan and Kamal be 8x and 5x years respectively.
After 8 years,
8x + 8 = 40
⇒ 8x = 40 − 8 = 32
∴ x = `32/8` = 4
∴ Kamal's age 6 years ago = 5x − 6
= 5 × 4 − 6
= 14 years
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Ratio and Proportion (Entrance Exam)
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