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From 1940 to 1955, the percent increase in the number of televisions

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From 1940 to 1955, the percent increase in the number of televisions  [#permalink]

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New post 24 Jan 2018, 22:31
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A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

74% (01:15) correct 26% (01:16) wrong based on 75 sessions

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From 1940 to 1955, the percent increase in the number of televisions  [#permalink]

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New post 25 Jan 2018, 08:42
Bunuel wrote:
Image
From 1940 to 1955, the percent increase in the number of televisions was closest to

A. 30
B. 130
C. 350
D. 450
E. 650

Use only the left axis of the graph.

The left and right axes have different scales. The left axis is marked off in multiples of 20. For each year, go straight up to the solid line, then left to the left axis.

In 1940, there were about 20 televisions. In 1955, there were about 90 televisions.

Percent change: \(\frac{New-Old}{Old} * 100\)

\(\frac{90-20}{20}*100=\frac{70}{20}*100=3.5*100=350\)
%

Answer C
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From 1940 to 1955, the percent increase in the number of televisions &nbs [#permalink] 25 Jan 2018, 08:42
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From 1940 to 1955, the percent increase in the number of televisions

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