By how many years is Jason older than Allison?

[BTGmoderatorDC]

By how many years is Jason older than Allison?

(1) Jason is 6 years older than twice David’s age.

(2) In 8 years, Allison will be twice as old as David is now.


OA C

Source: Veritas Prep

[Jay@ManhattanReview]

By how many years is Jason older than Allison?

(1) Jason is 6 years older than twice David’s age.

(2) In 8 years, Allison will be twice as old as David is now.

OA C

Source: Veritas Prep

Say Jason is J years and Allison is A years old.

We have to get the value of J – A.

Let's take each statement one by one.

(1) Jason is 6 years older than twice David’s age.

J = 2D + 6. However, we can't get the value of J – A. Insufficient.

(2) In 8 years, Allison will be twice as old as David is now.

A + 8 = 2D. However, we can't get the value of J – A. Insufficient.

From J = 2D + 6 and A + 8 = 2D, we get J – A = 14. Suffcient.

The correct answer: C

Hope this helps!

-Jay
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