GMAT Quantitative Reasoning Practice Test 3

Question : 82 of 100

Marks: +1, -0

Ronald is now 4.5 years older than Andrew and third of that amount older than Ingrid. If in 0.5 years, Ronald will be three times older than Andrew, then in 2.25 years what would be Ingrid’s divided by Andrew’s age multiplied by Ronald’s age?

$8.125$
$12.5$
$12.875$
$14.875$
$15.225$

Validate

Solution:

Translate piece by piece into numbers.

R

(Ronald)

=A

(Andrew) +4.5.
The second equation:

R=I

(Ingrid) +1.5 .
The third equation:

R+0.5=3(A+0.5)

. We have three equations with three variables.
Ronald is 6.25 , Ingrid is 4.75 and Andrew is 1.75 . In 2.25 years, Ronald will be 8.5 , Ingrid will be 7 and Andrew will be 4 . The answer is:

(7 / 4) × 8.5=14.875

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