GRE Prep 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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
A circular jogging track forms the edge of a circular lake that has a
[#permalink]
24 Jan 2022, 10:12
24 Jan 2022, 10:12
Expert Reply
1
Bookmarks
00:00
Question Stats:
100% (01:07) correct
0% (00:00) wrong based on 6 sessions
Hide Show timer Statistics
A circular jogging track forms the edge of a circular lake that has a diameter of 2 miles. Johanna walked once around the track at the average speed of 3 miles per hour. If t represents the number of hours it took Johanna to walk completely around the lake, which of the following is a correct statement?
A. 0.5< t < 0.75
B. 1.75< t < 2.0
C. 2.0 < t < 2.5
D. 2.5 < t < 3.0
E. 3 < t < 3.5
A. 0.5< t < 0.75
B. 1.75< t < 2.0
C. 2.0 < t < 2.5
D. 2.5 < t < 3.0
E. 3 < t < 3.5
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: A circular jogging track forms the edge of a circular lake that has a
[#permalink]
24 Jan 2022, 10:20
24 Jan 2022, 10:20
1
Carcass wrote:
A circular jogging track forms the edge of a circular lake that has a diameter of 2 miles. Johanna walked once around the track at the average speed of 3 miles per hour. If t represents the number of hours it took Johanna to walk completely around the lake, which of the following is a correct statement?
A. 0.5< t < 0.75
B. 1.75< t < 2.0
C. 2.0 < t < 2.5
D. 2.5 < t < 3.0
E. 3 < t < 3.5
A. 0.5< t < 0.75
B. 1.75< t < 2.0
C. 2.0 < t < 2.5
D. 2.5 < t < 3.0
E. 3 < t < 3.5
Circumference of a circle = (pi)(diameter)
So, the distance around the circular lake = (pi)(2) miles.
Travel time = distance/speed
So, Johanna's travel time = (pi)(2) miles/3 mph ≈ 6.28/3 ≈ 2.1 hours
Answer: C
gmatclubot
Re: A circular jogging track forms the edge of a circular lake that has a [#permalink]
24 Jan 2022, 10:20
Moderators:
