Due to construction, the speed limit along an 8-mile section of highway is reduced from 55 miles per hour to 35 miles per hour. Approximately how many minutes more will it take to travel along this section of highway at the new speed limit than it would have taken at the old speed limit ?
(A) 5
(B) 8
(C) 10
(D) 15
(E) 24
OA A
Source: GMAT Prep
Due to construction, the speed limit along an 8-mile section of highway is reduced from 55 miles per hour to 35 miles
This topic has expert replies
-
- Moderator
- Posts: 7187
- Joined: Thu Sep 07, 2017 4:43 pm
- Followed by:23 members
Timer
00:00
Your Answer
A
B
C
D
E
Global Stats
distance \(=\) rate \(\cdot \) timeBTGmoderatorDC wrote: ↑Sat Jun 25, 2022 7:05 pmDue to construction, the speed limit along an 8-mile section of highway is reduced from 55 miles per hour to 35 miles per hour. Approximately how many minutes more will it take to travel along this section of highway at the new speed limit than it would have taken at the old speed limit ?
(A) 5
(B) 8
(C) 10
(D) 15
(E) 24
OA A
Source: GMAT Prep
distance / rate \(=\) time
\(\dfrac{8}{55} \cdot 60=\dfrac{96}{11}=9\) minutes
\(\dfrac{8}{35}=\dfrac{96}{7}=14\) minutes
\(14-9=5\) minutes
Therefore, A