Rates for having a manuscript....

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anthony.j: Junior | Next Rank: 30 Posts; Posts: 26; Joined: Mon Apr 27, 2009 6:37 am; Location: South NJ, right outside of Philly; Thanked: 1 times; GMAT Score:420

by anthony.j » Tue May 12, 2009 3:45 pm

Hi,

I can't seem to find this problem on the board so could you please help me sove it? This problem is from the GMAT Prep Software

Rates for having a manuscript typed at a certain typing service are $5 per page for the first time a page is typed and $3 per page each time a page is revised. If a certain manuscript has 100 pages, of which 40 were revised once, 10 ere revised twice, and the rest required no revisions, what was the total cost of having the manscript typed?

A - $430
B - $620
C - $650
D - $680
E - $770

answer d

Ha! I just figured it out while typing it in. So I will leave it for the next person looking for it.
My process
$5 x 100 = $500
$3 x 40 = $120
$3 x 10 = $30 (first revision)
$3 x 10 = $30 (second revision) <--- this is what got me.

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Source: Beat The GMAT — Problem Solving | Tue May 12, 2009 3:45 pm

sureshbala: Master | Next Rank: 500 Posts; Posts: 319; Joined: Wed Feb 04, 2009 10:32 amFollowed by: 9 members; Location: Delhi; Thanked: 84 times

Re: Rates for having a manuscript....

by sureshbala » Tue May 12, 2009 5:32 pm

anthony.j wrote:Hi,

I can't seem to find this problem on the board so could you please help me sove it? This problem is from the GMAT Prep Software

Rates for having a manuscript typed at a certain typing service are $5 per page for the first time a page is typed and $3 per page each time a page is revised. If a certain manuscript has 100 pages, of which 40 were revised once, 10 ere revised twice, and the rest required no revisions, what was the total cost of having the manscript typed?

A - $430
B - $620
C - $650
D - $680
E - $770

answer d

Ha! I just figured it out while typing it in. So I will leave it for the next person looking for it.
My process
$5 x 100 = $500
$3 x 40 = $120
$3 x 10 = $30 (first revision)
$3 x 10 = $30 (second revision) <--- this is what got me.

Hi,

The mistake that you are doing here is that even those 40 pages and 10 pages which are revised once and twice respectively must be typed first. So you have to add 5$ in addition to the revision cost.

So here we go...

50 pages ---only typing cost 50 x 5 = 250 $

40 pages..type + revision cost 40 x 8 = 320 $

10 pages type + twice revision cost 10 x 11 = 110 $

Hence the total cost = 250 + 320 + 110 = 680 $

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anthony.j: Junior | Next Rank: 30 Posts; Posts: 26; Joined: Mon Apr 27, 2009 6:37 am; Location: South NJ, right outside of Philly; Thanked: 1 times; GMAT Score:420

by anthony.j » Tue May 12, 2009 7:38 pm

Hi Sureshbala,

Thanks for your response. Would it matter that I read the problem as having 100 pages and you read the problem as have 50 pages plus the additional rewrite pages?

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GB82: Newbie | Next Rank: 10 Posts; Posts: 1; Joined: Wed Aug 27, 2008 9:54 am

by GB82 » Sat Jun 13, 2009 4:17 pm

I also ran into a problem here. My reason for missing this is that I thought the pages that were revised twice were included in the 40 that were revised once. The problem doesn't make it especially clear that there is a unique set of pages that was revised once, and an entirely different set that was revised twice.

so the totals would be
100*5 for typing
40*3 (first round revisions)
10*3 (second round revisions)
=650, which is incorrect.

Can anyone provide a reason why it would be clear that a page that was revised twice does not count in the 40 that were revised once?

EDIT: The original problem in powerprep does include the keyword "only once"... so there's my answer. Doh!

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Naruto: Master | Next Rank: 500 Posts; Posts: 121; Joined: Thu Jun 11, 2009 1:16 am; Thanked: 4 times; GMAT Score:720

by Naruto » Sun Jun 14, 2009 5:06 am

anthony.j wrote:Hi Sureshbala,

Thanks for your response. Would it matter that I read the problem as having 100 pages and you read the problem as have 50 pages plus the additional rewrite pages?

Well for that approach you'll have to consider 60 pages to be reviewed instead of 50 since ten are revised twice

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akshaydhande: Newbie | Next Rank: 10 Posts; Posts: 8; Joined: Thu Jun 16, 2016 7:06 am; Location: Navi Mumbai; GMAT Score:630

by akshaydhande » Thu Sep 08, 2016 5:34 am

Cant help that. I think language is ambiguous.

700 in reach.

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Matt@VeritasPrep: GMAT Instructor; Posts: 2630; Joined: Wed Sep 12, 2012 3:32 pmFollowed by: 119 members; Location: East Bay all the way; Thanked: 625 times; GMAT Score:780

by Matt@VeritasPrep » Thu Sep 15, 2016 9:15 pm

akshaydhande wrote:Cant help that. I think language is ambiguous.

I think it's OK here: "once" = 1, not â‰¥ 1, etc.

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Jeff@TargetTestPrep: GMAT Instructor; Posts: 1462; Joined: Thu Apr 09, 2015 9:34 amFollowed by: 22 members; Location: New York, NY; Thanked: 39 times

by Jeff@TargetTestPrep » Sat Sep 17, 2016 4:37 am

anthony.j wrote:Hi,

I can't seem to find this problem on the board so could you please help me sove it? This problem is from the GMAT Prep Software

Rates for having a manuscript typed at a certain typing service are $5 per page for the first time a page is typed and $3 per page each time a page is revised. If a certain manuscript has 100 pages, of which 40 were revised once, 10 ere revised twice, and the rest required no revisions, what was the total cost of having the manscript typed?

A - $430
B - $620
C - $650
D - $680
E - $770

answer d

We are given that the manuscript has 100 pages, and, of those pages, 40 were revised once, 10 were revised twice, and the remaining 50 pages had no revisions.

Thus, the charge for the 50 pages that required no revisions was 50 x $5 = $250.

Next we can determine the total charge for the 40 pages that were revised once. We have an initial charge of $5 per page and an extra charge of $3 per page for the revision. Thus, the total cost was 40 x $8 = $320.

Finally, we determine the total cost for the 10 pages that were revised twice. We again have an initial charge of $5 and then a charge of $3 for each of the two revisions. Thus, the total cost was 10 x $11 = $110.

Therefore, the total cost of all 100 pages is $250 + $320 + $110 = $680.

Answer:D

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