Tips on Solving Aptitude Questions on Age

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4 TIPS on cracking Aptitude Questions related to
Age
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Tip1 Choose only one variable to solve the
problem.

• Question Mindys current age is 3 times that of
  her daughter, Cindy. 4 years ago, Mindys age was
  4 times that of her daughter, what will be
  Cindys age 5 years from now?
• Solution
• Let Cindys current age be x. Then Mindys age
  is 3x.
• According to the question,
• 3x-44(x-4)
• Or, 3x-44x-16
• Or, x12.
• Thus, 5 years from now, Cindys age will be
  12517years.

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Tip 2 If the question contains ages at
different points of time, choose the present age
as x.

• Question Ten years from now, Rachel will be
  three times older than she is today. What is her
  current age?
• Solution
• Let current age be x.
• Then, according to the question,
• x10 3x
• 2x10
• x5

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Tip 3 In questions containing the ages of
different people, consider the age of the
youngest person to be x.

• Question Johns father is 5 times older than
  John and John is twice as old as his sister
  Alice. In two years time, the sum of their ages
  will be 58. How old is John now?
• Solution
• Let Alices current age be x. Then Johns age2x
  and their fathers age is 10x.
• According to the question,
• (x2)(2x2)(10x2)58
• 13x58-6
• x4
• Johns present age10x440 years.

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Tip 4 Read the question very carefully. The
phrase n time more than needs to be understood
correctly.

• Question As age is twice greater than Bs. If
  the sum of their ages is 24, what is As age?
• Solution
• Let Bs age be x.
• Then As age x 2x 3x
  (and not 2x)
• Now, x3x 24
• Or, x 6.
• As age is 3x 18 years
• Question Mary is three times as old as her son.
  In 12 years, Mary's age will be one year less
  than twice her son's age. How old is each now?
• Solution
• Let the sons age be x. Then Marys age 3x.
• Given,
• 3x12 2(x12) 1
• 3x12 2x 23
• x11
• Marys age 33 years, Sons age 11 years.

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