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# If 70 percent of 600 is 40 percent of x, then x=?

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Manager
Joined: 10 Nov 2010
Posts: 246

Kudos [?]: 412 [1], given: 22

Location: India
Concentration: Strategy, Operations
GMAT 1: 520 Q42 V19
GMAT 2: 540 Q44 V21
WE: Information Technology (Computer Software)
If 70 percent of 600 is 40 percent of x, then x=? [#permalink]

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01 May 2012, 00:09
1
KUDOS
00:00

Difficulty:

5% (low)

Question Stats:

83% (00:38) correct 17% (00:39) wrong based on 164 sessions

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If 70 percent of 600 is 40 percent of x, then x=?

A. 105
B. 168
C. 342 and 6/7
D. 660
E. 1050

Guys I got A....

But OA is ....
[Reveal] Spoiler: OA

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Kudos [?]: 412 [1], given: 22

Math Expert
Joined: 02 Sep 2009
Posts: 42249

Kudos [?]: 132595 [0], given: 12326

Re: If 70 percent of 600 is 40 percent of x, then x=? [#permalink]

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01 May 2012, 00:17
GMATD11 wrote:
If 70 percent of 600 is 40 percent of x, then x=?

A. 105
B. 168
C. 342 and 6/7
D. 660
E. 1050

Guys I got A....

But OA is ....

Given: 0.7*600=0.4x --> 420=4/10*x --> x=1,050.

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Kudos [?]: 132595 [0], given: 12326

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Re: If 70 percent of 600 is 40 percent of x, then x=? [#permalink]

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12 Jul 2015, 05:58
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Re: If 70 percent of 600 is 40 percent of x, then x=? [#permalink]

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12 Jul 2015, 10:21
70% of 600 = 420, which is 40% of 1050. Ans (E).

Shortcut here is 7*6 = 420, 42/4 = 10.5.
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Kudos [?]: 108 [0], given: 47

Current Student
Joined: 09 Aug 2015
Posts: 94

Kudos [?]: 30 [0], given: 7

GMAT 1: 770 Q51 V44
GPA: 2.3
Re: If 70 percent of 600 is 40 percent of x, then x=? [#permalink]

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10 Aug 2015, 16:36
0.7 * 600 = 0.4 * x

x = 7/4 * 600

the trick is to not even spend time solving this, you automatically know its E because all the other answers are so off

Kudos [?]: 30 [0], given: 7

Re: If 70 percent of 600 is 40 percent of x, then x=?   [#permalink] 10 Aug 2015, 16:36
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