BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

★★★★★5.0559 reviews
GMATLiveTeach Starts Oct 17
Chris Peckover, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Chris Peckover, 100th-Percentile GMAT Scorer

Oct 17 · Chris Peckover
Sat · 11:00 AM to 2:00 PM ET
Oct 20 · Chris Peckover
Tue, Thu · 8:00 to 10:00 PM ET
Oct 25 · Josh Braslow
Sun · 1:00 to 4:00 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemand 5 seats left Start anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 559 reviewsTarget Test Prep

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

Work and time 3

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Master | Next Rank: 500 Posts
Posts: 435
Joined: Mon Mar 15, 2010 6:15 amFollowed by: 1 member
Thanked: 32 times
by eaakbari » Mon Apr 05, 2010 4:09 am
A can finish a work in 5 days and B can finish it in 10 days. Let A and B work every alternate day starting with A. In how many days will they finish?



Source:prep review book
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
Legendary Member
Posts: 1275
Joined: Thu Sep 21, 2006 11:13 pmFollowed by: 2 members
Location: Arabian Sea
Thanked: 125 times

by ajith » Mon Apr 05, 2010 4:14 am
eaakbari wrote:A can finish a work in 5 days and B can finish it in 10 days. Let A and B work every alternate day starting with A. In how many days will they finish?



Source:prep review book
A can finish 1/5 th of work each day and B can finish 1/10 th

A starts 1st day and finishes 1/5
B starts 2nd day and finishes 3/10 by end of the day
A starts 3nd day and finishes 5/10 by end of the day
B starts 4th day and finishes 6/10 by end of the day
A starts 5th day and finishes 8/10 by end of the day
B starts 6th day and finishes 9/10 by end of the day
A starts 7th day and finishes the work

7 is the answer
Always borrow money from a pessimist, he doesn't expect to be paid back.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 526
Joined: Sat Feb 21, 2009 11:47 pm
Location: India
Thanked: 68 times
GMAT Score:680

by harshavardhanc » Mon Apr 05, 2010 4:38 am
eaakbari wrote:A can finish a work in 5 days and B can finish it in 10 days. Let A and B work every alternate day starting with A. In how many days will they finish?



Source:prep review book
one more method. If you internalize percentages concept, it will be a very strong tool for you to do these kinds of sums.

See that A does 20% of the work in 1 day and B does 10%. Working alternately, they can do 30% of the work in 2 days.

So, in 6 (2 * 3) days, they will complete 3*30% = 90% of the work.

now, you need another 10% of the work to be done, which will be done by A working for another half day.

Therefore, answer will be 6.5 days.
Regards,
Harsha
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 51
Joined: Mon Jul 13, 2009 4:25 pm
Thanked: 1 times

by ymach3 » Wed Apr 07, 2010 4:12 am
I tried taking Work =100 books

A takes 5 days to print 100 books -> A's 1 day work=20 books per day.

B takes 10 days to print 100 book -> B's 1 day work= 10 books per day.

A starts first :

1st day - A prints -20 books.
2nd day- B prints - 10 books.
3rd day - 20 books
4th day - 10 books
5th day - 20 books
6th day - 10 books.
7th day - 20 books

at the End of the 7th day-110 books are printed.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 435
Joined: Mon Mar 15, 2010 6:15 amFollowed by: 1 member
Thanked: 32 times

by eaakbari » Wed Apr 07, 2010 11:49 am
The OA is 6.5 days


Thanks guys
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 2326
Joined: Mon Jul 28, 2008 3:54 amFollowed by: 2 members
Thanked: 173 times
GMAT Score:710

by gmatmachoman » Wed Apr 07, 2010 12:09 pm
eaakbari wrote:A can finish a work in 5 days and B can finish it in 10 days. Let A and B work every alternate day starting with A. In how many days will they finish?



Source:prep review book

SO what if A & B work every third day???

Harsha bhai...plz give me some handy formula!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 526
Joined: Sat Feb 21, 2009 11:47 pm
Location: India
Thanked: 68 times
GMAT Score:680

by harshavardhanc » Wed Apr 07, 2010 12:13 pm
gmatmachoman wrote:
eaakbari wrote:A can finish a work in 5 days and B can finish it in 10 days. Let A and B work every alternate day starting with A. In how many days will they finish?



Source:prep review book

SO what if A & B work every third day???

Harsha bhai...plz give me some handy formula!
Bhai,

do you mean : first day - A, second day-B and third day - both ( with this pattern continuing?)
Regards,
Harsha
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 2326
Joined: Mon Jul 28, 2008 3:54 amFollowed by: 2 members
Thanked: 173 times
GMAT Score:710

by gmatmachoman » Wed Apr 07, 2010 12:15 pm
eaakbari wrote:The OA is 6.5 days


Thanks guys
@eaakbari..

Handy formula what i could see here is : Find the total work done together and multiply by that number of days

Soln : One day work of A: 1/5
one day work of B : 1/10

Total one day work together: 3/10

Total days for working together : 10/3

Multiply this by 2( alternate days convention)

--->20/3

---> 6.5 days

We can extend if asked for 3 days/4 days/say "n" days gap.

Formula : T * n
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 2326
Joined: Mon Jul 28, 2008 3:54 amFollowed by: 2 members
Thanked: 173 times
GMAT Score:710

by gmatmachoman » Wed Apr 07, 2010 12:16 pm
harshavardhanc wrote:
gmatmachoman wrote:
eaakbari wrote:A can finish a work in 5 days and B can finish it in 10 days. Let A and B work every alternate day starting with A. In how many days will they finish?



Source:prep review book

SO what if A & B work every third day???

Harsha bhai...plz give me some handy formula!
Bhai,

do you mean : first day - A, second day-B and third day - both ( with this pattern continuing?)
Instead of every alternate day, if it asks every third day???
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 268
Joined: Wed Mar 17, 2010 2:32 am
Thanked: 17 times

by this_time_i_will » Wed Apr 07, 2010 5:06 pm
gmatmachoman wrote:
Instead of every alternate day, if it asks every third day???
you mean A works on 1st day, then A &B take rest on 2nd day, then B works on 3rd day, then rest, then A......like this??
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 1309
Joined: Wed Mar 17, 2010 11:41 pmFollowed by: 5 members
Thanked: 33 times

by pradeepkaushal9518 » Wed Apr 07, 2010 11:30 pm
i think this is repeatation of question
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1