Last visit was: 24 Apr 2026, 19:12 It is currently 24 Apr 2026, 19:12
Home
Messages
Tests
Schools
Events
Close
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
Back to Forum
Create Topic
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 24 Apr 2026
Posts: 109,818
Own Kudos:
811,087
 [2]
Given Kudos: 105,873
Products:
GMAT Club Tests Forum Quiz
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 109,818
Kudos: 811,087
 [2]
A foot race had 36 teams of a dozen runners each. By noon, 4/9 11 Jun 2019, 02:11
1
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

5% (low)

Question Stats:

89% (01:12) correct 11% (01:59) wrong based on 176 sessions

History

Date
Time
Result
Not Attempted Yet
A foot race had 36 teams of a dozen runners each. By noon, \(\frac{4}{9}\) of the teams had finished the race, and 70 percent of the remaining teams finished the race by one o' clock. How many teams had not finished the race by one o' clock?

A. 1
B. 2
C. 4
D. 6
E. 8
ShowHide Answer
Official Answer
D
User avatar
Lampard42
User avatar
Joined: 22 Nov 2018
Last visit: 12 Dec 2020
Posts: 424
Own Kudos:
561
 [2]
Given Kudos: 292
Location: India
GMAT 1: 640 Q45 V35
GMAT 2: 740 Q49 V41
GMAT 2: 740 Q49 V41
Posts: 424
Kudos: 561
 [2]
A foot race had 36 teams of a dozen runners each. By noon, 4/9 11 Jun 2019, 02:41
1
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
Bunuel
A foot race had 36 teams of a dozen runners each. By noon, \(\frac{4}{9}\) of the teams had finished the race, and 70 percent of the remaining teams finished the race by one o' clock. How many teams had not finished the race by one o' clock?

A. 1
B. 2
C. 4
D. 6
E. 8
Show more

36*(1-4/9)*(1-.7)=6 IMO D
User avatar
CareerGeek
User avatar
Joined: 20 Jul 2017
Last visit: 24 Apr 2026
Posts: 1,286
Own Kudos:
4,432
 [1]
Given Kudos: 162
Location: India
Concentration: Entrepreneurship, Marketing
GMAT 1: 690 Q51 V30
WE:Education (Education)
GMAT 1: 690 Q51 V30
Posts: 1,286
Kudos: 4,432
 [1]
A foot race had 36 teams of a dozen runners each. By noon, 4/9 11 Jun 2019, 07:14
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
A foot race had 36 teams of a dozen runners each. By noon, \(\frac{4}{9}\) of the teams had finished the race, and 70 percent of the remaining teams finished the race by one o' clock. How many teams had not finished the race by one o' clock?

A. 1
B. 2
C. 4
D. 6
E. 8
Show more

By noon, 4/9 teams = 4/9*36 = 16 teams finished the race
Remaining teams = 20

By 1 pm, 70% of remaining = 70/100*20 = 14 teams finished the race
Teams remaining after 1 pm = 20 - 14 = 6 teams

Option D

Pls Hit kudos if you like the solution
User avatar
EgmatQuantExpert
User avatar
e-GMAT Representative
Joined: 04 Jan 2015
Last visit: 02 Apr 2024
Posts: 3,657
Own Kudos:
20,880
Given Kudos: 165
Expert
Expert reply
Posts: 3,657
Kudos: 20,880
A foot race had 36 teams of a dozen runners each. By noon, 4/9 12 Jun 2019, 02:58
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Solution

Given:
    • A foot race had 36 teams of a dozen runners each
    • \(\frac{4}{9}\) of the teams finished the race by noon
    • 70% of the remaining teams finished the race by one o’clock

To Find:
    • The number of teams that had not finished the race by one o’clock

Approach & Working Out:
    • The number of teams that had not finished the race by one o’clock = \(36 – (\frac{4}{9}) * 36 – (\frac{70}{100}) * (1 - \frac{4}{9}) * 36 = 36 – 16 – 14 = 6\)

Hence, the correct answer is Option D
User avatar
ScottTargetTestPrep
User avatar
Target Test Prep Representative
Joined: 14 Oct 2015
Last visit: 24 Apr 2026
Posts: 22,286
Own Kudos:
26,534
 [1]
Given Kudos: 302
Status:Founder & CEO
Affiliations: Target Test Prep
Location: United States (CA)
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 22,286
Kudos: 26,534
 [1]
A foot race had 36 teams of a dozen runners each. By noon, 4/9 14 Jun 2019, 10:18
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
Bunuel
A foot race had 36 teams of a dozen runners each. By noon, \(\frac{4}{9}\) of the teams had finished the race, and 70 percent of the remaining teams finished the race by one o' clock. How many teams had not finished the race by one o' clock?

A. 1
B. 2
C. 4
D. 6
E. 8
Show more

By noon, 5/9 x 36 = 20 teams remained unfinished.

By one o’clock, 0.3 x 20 = 6 teams had not finished the race.

Answer: D
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 24 Apr 2026
Posts: 109,818
Own Kudos:
811,087
Given Kudos: 105,873
Products:
GMAT Club Tests Forum Quiz
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 109,818
Kudos: 811,087
A foot race had 36 teams of a dozen runners each. By noon, 4/9 20 Sep 2019, 02:04
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
A foot race had 36 teams of a dozen runners each. By noon, \(\frac{4}{9}\) of the teams had finished the race, and 70 percent of the remaining teams finished the race by one o' clock. How many teams had not finished the race by one o' clock?

A. 1
B. 2
C. 4
D. 6
E. 8
Show more

Official Explanation



In this question, the number of runners on each team has been given to us, but it doesn't seem to be important. We are asked how many teams finished, and all of useful information given to us is in terms of teams.

Since we have 36 teams, and 4/9 of them finished by noon, the number that finished by noon is

36*4/9 = 16

Then, we are told, 70% of the remaining teams finished. How many were remaining after 16 finished? The number remaining was 20, since 36 - 16 = 20. So 70% of 20 teams finished by one o'clock. That number is

0.7*2 = 1.4

Note that, in both statements, the fraction "of" a number or the percent "of" a number indicates multiplication of the fraction or percent by that number. Anyway, 14 of the remaining 20 just finished, so there are 6 teams that haven't finished yet. That's what the question is asking for.

The correct answer is (D).
User avatar
TheNightKing
User avatar
Joined: 18 Dec 2017
Last visit: 20 Mar 2024
Posts: 1,124
Own Kudos:
1,381
 [1]
Given Kudos: 421
Location: United States (KS)
GMAT 1: 600 Q46 V27
GMAT 1: 600 Q46 V27
Posts: 1,124
Kudos: 1,381
 [1]
A foot race had 36 teams of a dozen runners each. By noon, 4/9 14 Oct 2019, 21:26
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
Bunuel
A foot race had 36 teams of a dozen runners each. By noon, \(\frac{4}{9}\) of the teams had finished the race, and 70 percent of the remaining teams finished the race by one o' clock. How many teams had not finished the race by one o' clock?

A. 1
B. 2
C. 4
D. 6
E. 8
Show more

\(5/9*0.3*36=6\)

Note: Each team is of dozen runners is irrelevant.
User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 38,975
Own Kudos:
1,117
Posts: 38,975
Kudos: 1,117
A foot race had 36 teams of a dozen runners each. By noon, 4/9 02 Apr 2024, 05:41
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Automated notice from GMAT Club BumpBot:

A member just gave Kudos to this thread, showing it’s still useful. I’ve bumped it to the top so more people can benefit. Feel free to add your own questions or solutions.

This post was generated automatically.
Moderators:
Bunuel
Math Expert
109818 posts
Krunaal
Tuck School Moderator
853 posts