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# Between 1947 and 1972, the number of women in the labor force (A) incr

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Math Expert
Joined: 02 Sep 2009
Posts: 42250

Kudos [?]: 132495 [0], given: 12323

Between 1947 and 1972, the number of women in the labor force (A) incr [#permalink]

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26 Oct 2017, 02:47
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Difficulty:

35% (medium)

Question Stats:

80% (00:56) correct 20% (01:16) wrong based on 15 sessions

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Between 1947 and 1972, the number of women in the labor force

(A) increased by about 50%
(B) increased by about 100%
(C) increased by about 150%
(D) increased by about 200%
(E) increased by about 250%
[Reveal] Spoiler: OA

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Kudos [?]: 132495 [0], given: 12323

Director
Joined: 22 May 2016
Posts: 968

Kudos [?]: 335 [0], given: 587

Between 1947 and 1972, the number of women in the labor force (A) incr [#permalink]

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26 Oct 2017, 11:28
Bunuel wrote:

Between 1947 and 1972, the number of women in the labor force

(A) increased by about 50%
(B) increased by about 100%
(C) increased by about 150%
(D) increased by about 200%
(E) increased by about 250%

I managed to make this problem a lot harder than it is. It is straightforward. Derive the actual number of women from the graph only. (I mistakenly read the graph as the total workforce, men and women. It is women only.)

Actual number of women in the workforce in 1947 = about 17 M

Actual number of women in the workforce in 1972 = about 34 M

Percent increase = $$\frac{New-Old}{Old}=\frac{34-17}{17}=\frac{17}{17} = 1.0 * 100$$ =

100 percent increase
(If something doubles, that equals a 100% increase)

Answer B

Kudos [?]: 335 [0], given: 587

Target Test Prep Representative
Status: Head GMAT Instructor
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 1684

Kudos [?]: 900 [0], given: 5

Re: Between 1947 and 1972, the number of women in the labor force (A) incr [#permalink]

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30 Oct 2017, 13:55
Bunuel wrote:

Between 1947 and 1972, the number of women in the labor force

(A) increased by about 50%
(B) increased by about 100%
(C) increased by about 150%
(D) increased by about 200%
(E) increased by about 250%

The number of women in the labor force in 1947 was approximately 16.5 million.

The number in 1972 was approximately 33.5 million.

Thus, the increase was:

(335 - 16.5)/16.5 x 100 = 17/36.5 x 100 ≈ 100 percent

(Note that a 100% increase means that the number doubled.)

Answer: B
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Jeffery Miller
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GMAT Quant Self-Study Course
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Kudos [?]: 900 [0], given: 5

Re: Between 1947 and 1972, the number of women in the labor force (A) incr   [#permalink] 30 Oct 2017, 13:55
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# Between 1947 and 1972, the number of women in the labor force (A) incr

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