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Re: X years from now, Jim will be Y years old. How old will Jim be Z year [#permalink]
Current age of Jim be j

x years from now jim's age= j+x= Y.--> j=y-x

Z from years from now jim's age A= j+z -->substituting value of j from above --> A=y-x+z.. Hence answer is E.
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Re: X years from now, Jim will be Y years old. How old will Jim be Z year [#permalink]
Answer = E. Y – X + Z

Current age of Jim = y-x

Z years from now = (y-x) + z
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Re: X years from now, Jim will be Y years old. How old will Jim be Z year [#permalink]
Expert Reply
Bunuel wrote:

Tough and Tricky questions: Word Problems.



X years from now, Jim will be Y years old. How old will Jim be Z years from now?

A. X + Y + Z
B. X – Y + Z
C. X – Y – Z
D. X + Z
E. Y – X + Z

Kudos for a correct solution.


OFFICIAL SOLUTION:

(E) If Jim will be Y years old in X years, then his current age is:
Y – X years.

Therefore, in Z years, his age will be:Y – X + Z years.

The correct answer is choice (E)

Another way to arrive at this same answer is to make up numbers for the variables and plug them.
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Re: X years from now, Jim will be Y years old. How old will Jim be Z year [#permalink]
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Re: X years from now, Jim will be Y years old. How old will Jim be Z year [#permalink]
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