alleryTo compare 2/3 and 3/4, which is a common denominator to use?
A7
B12
C6
D24 only
Answer & Solution
Correct answer: B. 12
1. Find a common denominator of 3 and 4: 12 works.
2. 2/3 = 8/12 and 3/4 = 9/12, so 3/4 is larger.
3. 7 is not a multiple of 3 or 4, 6 is not a multiple of 4, and 24 is valid but not the only choice.
_Source: Wikipedia, Fraction, section Comparing fractions_
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