If 80% of my age 6 years ago is the same as 60% of my age after 10 years. What is the product of digits of my present age?

  1. 24
  2. 20
  3. 30
  4. 15

Answer (Detailed Solution Below)

Option 2 : 20
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RRB Group D Full Test 1
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Detailed Solution

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Let the present age be x

⇒ Six years ago my age will be = (x - 6)

⇒ Age after 10 years = (x + 10)

According to the question

⇒ 80% of (x – 6) = 60% of (x + 10)

⇒ 4x – 24 = 3x + 30

⇒ x = 54

∴ Product of digits = 5 × 4 = 20

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