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GRE Sample Test 4 Quantitative Reasoning 2
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© examsnet.com
Question : 11
Total: 20
If
p
−
q
p
=
2
7
, then
q
p
=
2/5
5/7
1
7/5
7/2
Validate
Solution:
Begin with cross multiplication and use algebra to isolate
q
p
.
p
−
q
p
=
2
7
7(p − q) = 2p Cross multiply.
7p − 7q = 2p Remove parentheses.
5p = 7q Add 7q; subtract 2p on both sides.
5
7
=
q
p
Divide both sides by 7p.
Choice (B) is correct.
© examsnet.com
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