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In 1984 the average cost of operating a subcompact car was approximate

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In 1984 the average cost of operating a subcompact car was approximate  [#permalink]

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New post Updated on: 21 May 2017, 09:16
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Question Stats:

54% (01:51) correct 46% (01:47) wrong based on 311 sessions

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AVERAGE COSTS OF OPERATING SUBCOMPACT, COMPACT, AND MIDSIZE CARS IN THE UNITED STATES, 1982~1986

Image

In 1984 the average cost of operating a subcompact car was approximately what percent less than the average cost of operating a midsized car?


(A) 12%

(B) 20%

(C) 25%

(D) 33%

(E) 48%

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Originally posted by carcass on 21 May 2017, 08:36.
Last edited by Bunuel on 21 May 2017, 09:16, edited 1 time in total.
Edited the image.
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Re: In 1984 the average cost of operating a subcompact car was approximate  [#permalink]

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New post 21 May 2017, 11:49
1
For Subcompact car, we can observe that out of the five values,
2 values are exactly 0.4
1 value is 0.35
2 values are between 0.3 and 0.35

So the average will be approx 0.35 or 0.36

For midsize car,
4 values are between 0.45 and 0.5
1 value is about 0.55

So the average will be approx 0.47 or 0.48

So taking the two answers are 0.36 and 0.48:
Required percentage = (0.48-0.36)/0.48 * 100 = 25%

Hence answer is C
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In 1984 the average cost of operating a subcompact car was approximate  [#permalink]

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New post 20 Aug 2018, 12:55
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I think there is a mistake in your approach ..
We need not take the average for all the years but only for 1984 as it is clearly mentioned in the question ..
Therefore it would go somewhat like .49 × 10000 = 4900
.37 × 10000 = 3700

4900-3700 = 1200

1200/4900*100 = 25% approx.
Ans (C)


amanvermagmat wrote:
For Subcompact car, we can observe that out of the five values,
2 values are exactly 0.4
1 value is 0.35
2 values are between 0.3 and 0.35

So the average will be approx 0.35 or 0.36

For midsize car,
4 values are between 0.45 and 0.5
1 value is about 0.55

So the average will be approx 0.47 or 0.48

So taking the two answers are 0.36 and 0.48:
Required percentage = (0.48-0.36)/0.48 * 100 = 25%

Hence answer is C


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Re: In 1984 the average cost of operating a subcompact car was approximate  [#permalink]

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New post 23 Aug 2018, 16:38
carcass wrote:
AVERAGE COSTS OF OPERATING SUBCOMPACT, COMPACT, AND MIDSIZE CARS IN THE UNITED STATES, 1982~1986

Image

In 1984 the average cost of operating a subcompact car was approximately what percent less than the average cost of operating a midsized car?


(A) 12%

(B) 20%

(C) 25%

(D) 33%

(E) 48%


We can use the percent change formula.

Approximating, we have:

(0.37 - 0.49)/0.49 = 0.12/0.49 ≈ 0.12/0.48 = 1/4 = 25%

Answer: C
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Re: In 1984 the average cost of operating a subcompact car was approximate  [#permalink]

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New post 12 Jun 2019, 04:04
carcass wrote:
AVERAGE COSTS OF OPERATING SUBCOMPACT, COMPACT, AND MIDSIZE CARS IN THE UNITED STATES, 1982~1986

Image

In 1984 the average cost of operating a subcompact car was approximately what percent less than the average cost of operating a midsized car?


(A) 12%

(B) 20%

(C) 25%

(D) 33%

(E) 48%


Forgive me, if my question is naive, but is this is Quant question or an IR question?
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Re: In 1984 the average cost of operating a subcompact car was approximate   [#permalink] 12 Jun 2019, 04:04
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