What number must be added to each of 2, 16, 20, 52 so that the results are in proportion?

[Evo23]

What number must be added to each of 2, 16, 20, 52 so that the results are in proportion?
A 5
B 7
C 10
D 11
E 12

[Jay@ManhattanReview]

What number must be added to each of 2, 16, 20, 52 so that the results are in proportion?

A 5
B 7
C 10
D 11
E 12

Say the number of x.

Thus, 2 + x, 16 + x, 20 + x, and 52 + x are in proportion.

=> (2 + x)/(16 + x) = (20 + x)/(52 + x)

=> x = 12

The correct answer: E

Hope this helps!

-Jay
_________________
Manhattan Review GMAT Prep

Locations: Manhattan Review Mumbai | Hyderabad | GRE Prep Warangal | Begumpet GRE Coaching | and many more...

Schedule your free consultation with an experienced GMAT Prep Advisor! Click here.