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72% (00:22) correct
28% (00:33) wrong based on 75 sessions
Quantity A
Quantity B
\(\frac{1}{19} - 1\)
\(\frac{1}{18} - 1\)
A. The quantity in Column A is greater B. The quantity in Column B is greater C. The two quantities are equal D. The relationship cannot be determined from the information given
A. The quantity in Column A is greater B. The quantity in Column B is greater C. The two quantities are equal D. The relationship cannot be determined from the information given
Kudos for the right answer and solution.
We can solve this question using matching operations
Given: Quantity A: 1/19 - 1 Quantity B: 1/18 - 1
Add 1 to both quantities: Quantity A: 1/19 Quantity B: 1/18
At this point, we might recognize that 1/18 is greater than 1/19. Answer: B
However, we can also continue using matching operations
Multiply both quantities by 19 to get: Quantity A: 1 Quantity B: 19/18
Quantity B is still bigger!
Multiply both quantities by 18 to get: Quantity A: 18 Quantity B: 19
Yep, Quantity B is must be bigger
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72% (00:22) correct
