Mar 23 07:00 AM PDT  09:00 AM PDT Christina scored 760 by having clear (ability) milestones and a trackable plan to achieve the same. Attend this webinar to learn how to build trackable milestones that leverage your strengths to help you get to your target GMAT score. Mar 27 03:00 PM PDT  04:00 PM PDT Join a free live webinar and learn the winning strategy for a 700+ score on GMAT & the perfect application. Save your spot today! Wednesday, March 27th at 3 pm PST Mar 29 10:00 PM PDT  11:00 PM PDT Right now, their GMAT prep, GRE prep, and MBA admissions consulting services are up to $1,100 off. GMAT (Save up to $261): SPRINGEXTRAGMAT GRE Prep (Save up to $149): SPRINGEXTRAGRE MBA (Save up to $1,240): SPRINGEXTRAMBA
Author 
Message 
TAGS:

Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 53791

A certain work plan for September requires that a work team, working
[#permalink]
Show Tags
30 Jul 2018, 00:15
Question Stats:
93% (01:29) correct 7% (01:49) wrong based on 509 sessions
HideShow timer Statistics




Manager
Joined: 28 Jun 2018
Posts: 150
Location: India
Concentration: Finance, Marketing
GPA: 4

A certain work plan for September requires that a work team, working
[#permalink]
Show Tags
30 Jul 2018, 00:57
No. of days in september = 30 we don't need to calculations for this , as we know team is short of 50 items every day or 15*50 for first half (exactly 15 days) and required average is 200 items per day. therefore , they need to produce 200 per day + what they are short in 1st half {50 per day> as you are left with exactly 15 days = (50*15) / 15)} = 200 + 50 = 250 therefore ans B
_________________
What to do if you are new to GMAT: https://gmatclub.com/forum/whattodoifyouarenew272708.html#p2108758
GMAC official guides : https://gmatclub.com/forum/gmacofficialguidesthemasterdirectorylinks240610.html#p1854935
Give me kudos if you like it , it's totally harmless




MBA Section Director
Affiliations: GMATClub
Joined: 22 May 2017
Posts: 2360
GPA: 4
WE: Engineering (Computer Software)

Re: A certain work plan for September requires that a work team, working
[#permalink]
Show Tags
30 Jul 2018, 00:23
A certain work plan for September requires that a work team, working every day, produce an average of 200 items per day => Total number of items needed = 30 * 200 = 6000 (since 30 days in September) For the first half of the month, the team produced an average of 150 items per day => Team already produced 15 * 150 = 2250 items Number of items remaining to be produced = 6000  2250 = 3750 Remaining number of days = 30  15 = 15 Average = \(\frac{3750}{15}\) = 250 Hence option B
_________________
MBA Chronicles  Interview Debriefs  Follow gmat_club on Instagram



Director
Status: Learning stage
Joined: 01 Oct 2017
Posts: 966
WE: Supply Chain Management (Energy and Utilities)

Re: A certain work plan for September requires that a work team, working
[#permalink]
Show Tags
03 Aug 2018, 08:40
Bunuel wrote: A certain work plan for September requires that a work team, working every day, produce an average of 200 items per day. For the first half of the month, the team produced an average of 150 items per day. How many items per day must the team average during the second half of the month if it is to attain the average daily production rate required by the work plan? A. 225 B. 250 C. 275 D. 300 E. 350 NEW question from GMAT® Quantitative Review 2019 (PS06719) We have no of days=30 Let the required no of items be x. We have \(\frac{15*150+15*x}{15+15}=200\) Or, 2250+15x=200*30 Or, 15x=60002250=3750 Or, \(x=\frac{3750}{15}=250\) Ans. (B)
_________________
Regards,
PKN
Rise above the storm, you will find the sunshine



Board of Directors
Status: QA & VA Forum Moderator
Joined: 11 Jun 2011
Posts: 4404
Location: India
GPA: 3.5
WE: Business Development (Commercial Banking)

Re: A certain work plan for September requires that a work team, working
[#permalink]
Show Tags
03 Aug 2018, 09:20
Bunuel wrote: A certain work plan for September requires that a work team, working every day, produce an average of 200 items per day. For the first half of the month, the team produced an average of 150 items per day. How many items per day must the team average during the second half of the month if it is to attain the average daily production rate required by the work plan? A. 225 B. 250 C. 275 D. 300 E. 350 NEW question from GMAT® Quantitative Review 2019 (PS06719) September has 30 Days so  \(30* 200 = 15*150 + 15k\) Or, \(6000 = 2250 + 15k\) So, k = 250, Answer must be (B)
_________________
Thanks and Regards
Abhishek....
PLEASE FOLLOW THE RULES FOR POSTING IN QA AND VA FORUM AND USE SEARCH FUNCTION BEFORE POSTING NEW QUESTIONS
How to use Search Function in GMAT Club  Rules for Posting in QA forum  Writing Mathematical Formulas Rules for Posting in VA forum  Request Expert's Reply ( VA Forum Only )



Intern
Joined: 09 Apr 2018
Posts: 31
GPA: 4

Re: A certain work plan for September requires that a work team, working
[#permalink]
Show Tags
07 Aug 2018, 00:19
using the weighted average to get the combined rate:
150*0.5+0.5*x=200 75+0.5*x=200 0.5*x=125 x=250
Posted from my mobile device



Target Test Prep Representative
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 5398
Location: United States (CA)

Re: A certain work plan for September requires that a work team, working
[#permalink]
Show Tags
10 Aug 2018, 18:58
Bunuel wrote: A certain work plan for September requires that a work team, working every day, produce an average of 200 items per day. For the first half of the month, the team produced an average of 150 items per day. How many items per day must the team average during the second half of the month if it is to attain the average daily production rate required by the work plan?
A. 225 B. 250 C. 275 D. 300 E. 350 We can create the equation: 200 = (150 x 15 + n)/30 6000 = 2,250 + n 3,750 = n So per day, 3,750/15 = 250 items must be produced Alternate Solution: For the first half of the month, the team was 50 items below the daily goal each day. Thus, for the second half of the month, the team must produce the required 200 daily units each day, plus 50 extra units each day (to make up for the earlier deficit). Thus, the team must have a daily average of 250 units for the second half of the month.. Answer: B Alternate Solution: We see that 150/200 = 3/4 = 0.75 or 25 percent less of the average was produced per day for the first 15 days. To produce the average for the 25 percent more than the average must be produced or 1.25 x 200 = 250 items per day.
_________________
5star rated online GMAT quant self study course See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews



Intern
Joined: 11 Sep 2013
Posts: 20

Re: A certain work plan for September requires that a work team, working
[#permalink]
Show Tags
14 Aug 2018, 14:22
Bunuel For the sake of simplicity, would you recommend the following approach for this question? (150+n)/2=200 150+n=400 n=250 Thank you in advance.



Math Expert
Joined: 02 Sep 2009
Posts: 53791

Re: A certain work plan for September requires that a work team, working
[#permalink]
Show Tags
15 Aug 2018, 00:16
gatz wrote: Bunuel For the sake of simplicity, would you recommend the following approach for this question? (150+n)/2=200 150+n=400 n=250 Thank you in advance. This works because the time period is split in half: For the first half of the month, the team produced an average of 150 items per day. How many items per day must the team average during the second half of the month if it is to attain the average daily production rate required by the work plan?However if it were: For the first third of the month, the team produced an average of 150 items per day. How many items per day must the team average during the remaining two thirds of the month if it is to attain the average daily production rate required by the work plan? Then this approach won''t give the correct answer.
_________________
New to the Math Forum? Please read this: Ultimate GMAT Quantitative Megathread  All You Need for Quant  PLEASE READ AND FOLLOW: 12 Rules for Posting!!! Resources: GMAT Math Book  Triangles  Polygons  Coordinate Geometry  Factorials  Circles  Number Theory  Remainders; 8. Overlapping Sets  PDF of Math Book; 10. Remainders  GMAT Prep Software Analysis  SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS)  Tricky questions from previous years.
Collection of Questions: PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.
What are GMAT Club Tests? Extrahard Quant Tests with Brilliant Analytics



Manager
Joined: 16 May 2017
Posts: 51
GPA: 3.8
WE: Medicine and Health (Health Care)

A certain work plan for September requires that a work team, working
[#permalink]
Show Tags
02 Oct 2018, 05:51
September month has 30 days.
Ideal avg. production=200/day For first 15 days item production150/day Difference/day=200150=>50 items/day (produced less per day for 15 days) That implies to maintain avg. item production =200/day, we should get 50 item production extra/day in addition to 200/day (50+200) for next 15 days=250/day
(B)



Director
Joined: 19 Oct 2013
Posts: 508
Location: Kuwait
GPA: 3.2
WE: Engineering (Real Estate)

Re: A certain work plan for September requires that a work team, working
[#permalink]
Show Tags
15 Oct 2018, 12:02
Number sense approach would be to realize that it is 50 units below the target for half of the month so it must be be compensated by an addition of 50 for the other half of the month.
200 + 50 = 250
The other way is
\(30 * 200 = 15 * 150 + 15 * x\)
This can be rewritten as \(30 * 200 = 15 (150+x)\)
\(2 * 200 = (150+x)\)
\(400 = 150 + x\)
\(x = 400  150 = 250\)
Answer choice B




Re: A certain work plan for September requires that a work team, working
[#permalink]
15 Oct 2018, 12:02






