The user-friendly version of this content is available here.
The following content is copyright (c) 2009-2013 by Goods of the Mind, LLC.
This problem trains for: SAT-I, AMC-8, GMAT.
What is the sum of the numbers a, b and c which satisfy the conditions:
We compute the expressions for two of the numbers as a function of the third one:
Then, we substitute these expressions in the product:
and we obtain a=15, b=33 and c=9. The sum of these numbers is equal to 57.