gmat1393 wrote:
The scores obtained by Ben and Molly in three tests is shown in the table below.
Ben Molly
Test-1 x y
Test-2 y z
Test-3 z x
Is x = y = z?
(1) Sum of the scores obtained by Ben and Molly in each of the tests equals 100.
(2) x = z
1. x + y = y + z = x + z = 100
This is only possible when x = y = z = 50
(Sufficient)
2. x = z
Since we have no information about y, we cannot say for sure that x = y = z
(Insufficient) (Option A)
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