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If it costs d dollars to make the first 100 copies of a poster and e d

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If it costs d dollars to make the first 100 copies of a poster and e d  [#permalink]

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New post 09 Jun 2016, 03:42
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  15% (low)

Question Stats:

72% (00:38) correct 28% (00:47) wrong based on 100 sessions

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If it costs d dollars to make the first 100 copies of a poster and e dollars for each poster after that, what is the total cost of 125 posters?

A. 25d + 100e
B. 100d + 25e
C. 125de
D. d + 25e
E. 125/(de)

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Re: If it costs d dollars to make the first 100 copies of a poster and e d  [#permalink]

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New post 09 Jun 2016, 03:58
Bunuel wrote:
If it costs d dollars to make the first 100 copies of a poster and e dollars for each poster after that, what is the total cost of 125 posters?

A. 25d + 100e
B. 100d + 25e
C. 125de
D. d + 25e
E. 125/(de)


Dollars needed for first 100 copies = d
Dollars needed for each successive copy = e

Cost of 125 copies = cost of 100 copies + cost of 25 copies = d + 25e

Correct Option: D
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Re: If it costs d dollars to make the first 100 copies of a poster and e d  [#permalink]

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New post 09 Jun 2016, 09:58
Bunuel wrote:
If it costs d dollars to make the first 100 copies of a poster and e dollars for each poster after that, what is the total cost of 125 posters?

A. 25d + 100e
B. 100d + 25e
C. 125de
D. d + 25e
E. 125/(de)


First 100 copies are made in 'd' dollars

Remaining 25 copies are made e dollars/poster or 25e dollars

Total price = d+25e

D is the answer
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Re: If it costs d dollars to make the first 100 copies of a poster and e d  [#permalink]

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New post 09 Jun 2016, 12:25
Bunuel wrote:
If it costs d dollars to make the first 100 copies of a poster and e dollars for each poster after that, what is the total cost of 125 posters?

A. 25d + 100e
B. 100d + 25e
C. 125de
D. d + 25e
E. 125/(de)


Easy one no doubt (D)

Answer will undoubtedly be (D)
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If it costs d dollars to make the first 100 copies of a poster and e d  [#permalink]

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New post 02 Jul 2018, 10:19
Bunuel wrote:
If it costs d dollars to make the first 100 copies of a poster and e dollars for each poster after that, what is the total cost of 125 posters?

A. 25d + 100e
B. 100d + 25e
C. 125de
D. d + 25e
E. 125/(de)

The trap lies in the phrasing. If the question says "d dollars," the dollars have already been included in the lone variable d.

That is, "d" (dollars) has already been multiplied by 1 dollar. Don't multiply by dollars again.
(And don't multiply by 100 cents unless the problem mentions cents.)
If you see "e dollars" think:
"___ dollars" = "10 dollars" = $10.00 = e
When we say "10 dollars" we actually mean $10.00

Let the first 100 copies cost $100. d = $100
Let each extra copy = $2.00. e = $2

How much do 125 copies cost?
$100 for the 100 copies
($2 * 25) = $50 for the next 25
Total $150

If we use Answer B) \(100d + 25e\) ...We get \((100*$100)+(25*$2)=($10,000+$50)=$10,050\)

Answer D) \(d + 25e\)
\($100 + (25 * $2) = ($100 + $50) = $150\)


That's correct

Answer D

As with d dollars, the p in "p percent" includes the percent. Percent means "per hundred." If I say 50 percent, I am really saying \(\frac{50}{100}\). If I decide "p percent" is 60 percent, I plug in p = 60, not p = .6. If I plug in p = .6, I get \(\frac{.6}{100} = .006,\) which is not even 1%.
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If it costs d dollars to make the first 100 copies of a poster and e d  [#permalink]

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New post 02 Jul 2018, 11:00
Bunuel wrote:
If it costs d dollars to make the first 100 copies of a poster and e dollars for each poster after that, what is the total cost of 125 posters?

A. 25d + 100e
B. 100d + 25e
C. 125de
D. d + 25e
E. 125/(de)


Total Cost = Fixed Cost + Variable Cost

Or, Total Cost = d + e(125 - 100)

Or, Total Cost = d + 25e ; Answer must be (D)


PS : WITHOUT TAKING ANY X and Y
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Re: If it costs d dollars to make the first 100 copies of a poster and e d  [#permalink]

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New post 04 Jul 2018, 19:01
Bunuel wrote:
If it costs d dollars to make the first 100 copies of a poster and e dollars for each poster after that, what is the total cost of 125 posters?

A. 25d + 100e
B. 100d + 25e
C. 125de
D. d + 25e
E. 125/(de)


The first 100 copies will cost d dollars, and the next 25 copies will cost 25e dollars. Thus, the total cost is d + 25e dollars.

Answer: D
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Re: If it costs d dollars to make the first 100 copies of a poster and e d &nbs [#permalink] 04 Jul 2018, 19:01
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