VJesus12 wrote: ↑Thu Jul 30, 2020 9:10 am
Did the sum of the prices of three shirts exceed \(\$60?\)
(1) The price of the most expensive of the shirts exceeded \(\$30.\)
(2) The price of the least expensive of the shirts exceeded \(\$20.\)
[spoiler]OA=B[/spoiler]
Source: Official Guide
Kudos for a correct solution.[/quote]
Target question: Did the sum of the prices of three shirts exceed $60?
Statement 1: The price of the most expensive of the shirts exceeded $30
This statement doesn't FEEL sufficient, so I'll TEST some values.
Case a: the shirt prices are $31, $32 and $33, in which case
the sum of the 3 prices EXCEEDS $60
Case b: the shirt prices are $11, $12 and $33, in which case
the sum of the 3 prices DOES NOT exceed $60
Since we cannot answer the
target question with certainty, statement 1 is NOT SUFFICIENT
Aside: For more on this idea of plugging in values when a statement doesn't feel sufficient, you can read my article: https://www.gmatprepnow.com/articles/dat ... lug-values
Statement 2: The price of the least expensive of the shirts exceeded $20
If the
least expensive shirt costs 20+ dollars, then the other 2 shirts also cost 20+ dollars each
(20+ dollars) + (20+ dollars) + (20+ dollars) = 60+ dollars
So, we can conclude that
the sum of the 3 prices EXCEEDS $60
Since we can answer the
target question with certainty, statement 2 is SUFFICIENT
Answer = B
Cheers,
Brent
