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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: 50670
Between 1947 and 1972, the number of women in the labor force (A) incr  [#permalink]

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26 Oct 2017, 01:47
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Difficulty:

25% (medium)

Question Stats:

73% (01:12) correct 28% (01:31) wrong based on 47 sessions

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

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Senior SC Moderator
Joined: 22 May 2016
Posts: 2115
Between 1947 and 1972, the number of women in the labor force (A) incr  [#permalink]

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26 Oct 2017, 10:28
Bunuel wrote:

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

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)

Target Test Prep Representative
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Posts: 2830
Re: Between 1947 and 1972, the number of women in the labor force (A) incr  [#permalink]

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30 Oct 2017, 12:55
Bunuel wrote:

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

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.)

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Re: Between 1947 and 1972, the number of women in the labor force (A) incr &nbs [#permalink] 30 Oct 2017, 12:55
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