Free Practice Question
DS · Data Sufficiency
sub-505
Arithmetic
What is the average (arithmetic mean) of a and b?
(1) The average (arithmetic mean) of a + 2 and b + 7 is 12
(2) The average (arithmetic mean) of a, b and 6 is 7
Answer Choices
Correct answer marked belowA
Statement (1) ALONE is sufficient
B
Statement (2) ALONE is sufficient
C
BOTH statements TOGETHER are sufficient
EACH statement ALONE is sufficient
Correct
E
Statements (1) and (2) TOGETHER are NOT sufficient
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Sign in to commentWhat this question tests
What it tests
Your fluency with the order of operations, fractions, decimals, and basic number sense — the foundation every quant question leans on.
Common trap
Applying the order of operations out of sequence or rounding intermediate values before the final step.
Details
Difficulty
sub-505
Type
DS
Category