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07 Aug 2016, 21:15
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
(N/A)
Question Stats:
33% (03:16) correct
67%
(02:07)
wrong
based on 3
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Not Attempted Yet
Each section of GMAT test has different weightage. the weightage of QA, VA and IR section was 8,9, and 10 respectively. the max marks in all the sections together were 810. wrong answer did not carry negative marks. if Jen haD gotten 20% more marks in QA & 8% more marks in VA & 7.14% more marks in IR, then she must had gotten 100% marks in all the three sections. the total marks that Jen had scored:
a.730
b.740
c.700
d.750
e.775
a.730
b.740
c.700
d.750
e.775
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This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
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07 Aug 2016, 23:20
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8x+9x+10x = 810
x= 30
Q weightage will be 120/100 y= 240
v weightage will be 270/100 z= 270
IR will be 107.4 /100 a= 300
y+z+a = 730
x= 30
Q weightage will be 120/100 y= 240
v weightage will be 270/100 z= 270
IR will be 107.4 /100 a= 300
y+z+a = 730
08 Aug 2016, 00:04
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gmatash
Terrible method, would be interested in improvements.
\(8 + 9 + 10 = 27\\\\
\frac{810}{27} = 30\\\\
Q = 8 \times 30 = 240, V = 270, I = 300\)
\(1.2 \times a = 240\\\\
1.08\times b = 270\\\\
1.0714\times c = 300\)
\(a = 200\), by inspection.
Try a reduction by 27 on both sides for \(b\). We know that the multiple to obtain 108 must end in a 4, so try it.
\(108 = 4 \times 27 \implies \frac{4}{100} \times b = 10 \implies b = 250\)
Struggled to get \(c\). Enumerated answer choices (stopped at A).
\(a + b= 450\)
\(\textbf{(A)} \implies c = 730 - 450 = 280\\ 280 \times 1.07 = 280 + 19.6 \approx 300\)
Therefore (A)
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
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Thank you for understanding, and happy exploring!
