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31 Oct 2017, 23:02
Kudos
Bookmarks
D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
77% (01:17) correct
23%
(01:14)
wrong
based on 127
sessions
History
Date
Time
Result
Not Attempted Yet
If \(\frac{4x}{7y} = 1\), then what is the value of 3x + 5y ?
(1) x + 4y = 23
(2) y^3 = 64
(1) x + 4y = 23
(2) y^3 = 64
Luckisnoexcuse
Current Student
Joined: 18 Aug 2016
Last visit: 31 Mar 2026
Posts: 513
Given Kudos: 198
Concentration: Strategy, Technology
Schools: Kenan-Flagler '20 (M)
GMAT 1: 630 Q47 V29
GMAT 2: 740 Q51 V38
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01 Nov 2017, 00:28
Kudos
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Bunuel
x = 7y/4
(1) 7y/4 + 4y = 23
23y = 23*4
y=4
then x = 7
3x +5y = 41..sufficient
(2) y = 4
then x = 7
3x +5y = 41..sufficient
D
01 Nov 2017, 19:35
Kudos
Bookmarks
\(\frac{4x}{7y}\)=1; x=\(\frac{7y}{4}\)
Put this value in (1)
\(\frac{7y}{4}\)+4y=23
\(\frac{7y+16y}{4}\)=23
y=4, then x=7
3x+5y= 3(7)+5(4)= 41 [Suff]
(2) \(y^3\)=64; y=4, then x=7
3x+5y= 3(7)+5(4)= 41 [Suff]
Answer: D.
Put this value in (1)
\(\frac{7y}{4}\)+4y=23
\(\frac{7y+16y}{4}\)=23
y=4, then x=7
3x+5y= 3(7)+5(4)= 41 [Suff]
(2) \(y^3\)=64; y=4, then x=7
3x+5y= 3(7)+5(4)= 41 [Suff]
Answer: D.
