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# It costs \$1,000 to make the first thousand copies of a book and x doll

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Math Expert
Joined: 02 Sep 2009
Posts: 51188
It costs \$1,000 to make the first thousand copies of a book and x doll  [#permalink]

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24 Oct 2017, 00:51
00:00

Difficulty:

35% (medium)

Question Stats:

84% (01:22) correct 16% (01:43) wrong based on 44 sessions

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It costs \$1,000 to make the first thousand copies of a book and x dollars to make each subsequent copy. If it costs a total of \$7,230 to make the first 8,000 copies of a book, what is x?

(A) .89
(B) .90375
(C) 1.00
(D) 89
(E) 90.375

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Intern
Joined: 28 Aug 2017
Posts: 35
Re: It costs \$1,000 to make the first thousand copies of a book and x doll  [#permalink]

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24 Oct 2017, 02:01
\$x for each copy after 1000 copies.
\$7230 dollars to make 8000 copies => \$1000 for the first 1000 copies and \$6230 for the rest 7000 copies
x = 6230/7000 = \$0.89

Intern
Joined: 23 Oct 2017
Posts: 5
Re: It costs \$1,000 to make the first thousand copies of a book and x doll  [#permalink]

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24 Oct 2017, 03:06
A

It costs a total of \$7,230 to make the first 8,000 copies of a book.
It costs \$1,000 to make the first thousand copies of a book and x dollars to make each subsequent copy.

Thus, (8000-1000)*x = 7230-1000 dollars
7000x = 6230
x = 0.89 dollars
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I would like to practice my English skill and GMAT, Please advise if I am incorrect. Thanks in advance!

Target Test Prep Representative
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2830
Re: It costs \$1,000 to make the first thousand copies of a book and x doll  [#permalink]

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26 Oct 2017, 14:48
Bunuel wrote:
It costs \$1,000 to make the first thousand copies of a book and x dollars to make each subsequent copy. If it costs a total of \$7,230 to make the first 8,000 copies of a book, what is x?

(A) .89
(B) .90375
(C) 1.00
(D) 89
(E) 90.375

We can create the following equation:

7230 = 1000 + 7000x

6230 = 7000x

6230/7000 = x

x = 6.23/7 = 0.89

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Re: It costs \$1,000 to make the first thousand copies of a book and x doll &nbs [#permalink] 26 Oct 2017, 14:48
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