Hi All,
While most Test Takers would probably do "System" Algebra to solve this question (which is a perfectly acceptable approach to this question), there's also a pattern-matching shortcut built into it that provides another option.
We're told that two sets of items that can be purchased for $160
2 bats + 4 balls = $160
1 bat + 6 balls = $160
Looking at this data, we can see that "trading" 1 bat will get you 2 balls at the same price. Thus, the price of 1 bat = the price of 2 balls.
We're asked to buy the SAME number of bats and balls with $240....
$240 = (1.5)($160)
Using that first equation, we can multiply all of the terms by 1.5, which gives us...
2(1.5) bats + 4(1.5) balls = $160(1.5)
3 bats + 6 balls = $240
Noting the earlier "trade" option, we can "trade" 2 balls for 1 bat....this gives us....
4 bats + 4 balls = $240
So the MOST bats that can be purchased under these conditions is 4.
Final Answer:
GMAT assassins aren't born, they're made,
Rich