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07 Feb 2022, 02:30
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
64% (01:42) correct
36%
(01:50)
wrong
based on 107
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In parallelogram PQRS above, what is the sum a+b+c?
(1) c=3b
(2) a=36
Are You Up For the Challenge: 700 Level Questions
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ParallelogramPQRS.png [ 1.65 KiB | Viewed 2269 times ]
07 Feb 2022, 02:40
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I must go with D) although I have some reservations about my answer I am confident this is the correct answer although I could be wrong because when solving for the problem I made some assumptions instead of working the problem out… since opposing angles are related to be the same and the perpendicular angles on a horizontal line will always add up to 180 degrees… then we can fill in the blanks with some algebra and see that both 1) & 2) are sufficient to answer by themselves. I did not work this problem out to the end but made an educated guess that D is correct
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Posted from my mobile device
07 Feb 2022, 03:25
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Pre-thinking
3a+2b=180
c=3a
(1) Only
c=3a=3b =>a=b
Sufficient to solve for a, b, and c.
(2) Only
a = 3a
Then solve for b.
Sufficient.
Answer is (D).
3a+2b=180
c=3a
(1) Only
c=3a=3b =>a=b
Sufficient to solve for a, b, and c.
(2) Only
a = 3a
Then solve for b.
Sufficient.
Answer is (D).
