GMAT Quantitative Reasoning Practice Test 1

Question : 1 of 100

Marks: +1, -0

Roy is now 4 years older than Erik and half of that amount older than Iris. If in 2 years, Roy will be twice as old as Erik, then in 2 years what would be Roy’s age multiplied by Iris’s age?

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Solution:

Translate piece by piece into numbers.

R

(Roy)

=E

(Erik) +4 . The second equation:

R=I

(Iris) +2 . The third equation:

R+7=2(E+7)

. We have three equations with three variables.
Roy is 6, Iris is 4 and Erik is 2 . In four years Erik would be 6 and Iris 8 , the answer is 48 .

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