GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 21 Apr 2019, 19:20

### 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

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

# David drives from his home to the airport to catch a flight. He drives

Author Message
TAGS:

### Hide Tags

Manager
Status: Manager
Joined: 02 Nov 2018
Posts: 179
David drives from his home to the airport to catch a flight. He drives  [#permalink]

### Show Tags

19 Mar 2019, 07:22
1
00:00

Difficulty:

75% (hard)

Question Stats:

50% (03:48) correct 50% (03:03) wrong based on 20 sessions

### HideShow timer Statistics

David drives from his home to the airport to catch a flight. He drives 35 miles in the first hour, but realizes that he will be 1 hour late if he continues at this speed. He increases his speed by 15 miles per hour for the rest of the way to the airport and arrives 30 minutes early. How many miles is the airport from his home?

A) 140

B) 175

C) 210

D) 245

E) 280

_________________
Give a kudos if u find my post helpful. kudos motivates active discussions

CEO
Status: GMATINSIGHT Tutor
Joined: 08 Jul 2010
Posts: 2906
Location: India
GMAT: INSIGHT
Schools: Darden '21
WE: Education (Education)
David drives from his home to the airport to catch a flight. He drives  [#permalink]

### Show Tags

19 Mar 2019, 07:28
1
David drives from his home to the airport to catch a flight. He drives 35 miles in the first hour, but realizes that he will be 1 hour late if he continues at this speed. He increases his speed by 15 miles per hour for the rest of the way to the airport and arrives 30 minutes early. How many miles is the airport from his home?

A) 140

B) 175

C) 210

D) 245

E) 280

$$Speed = \frac{Distance}{Time}$$

Initial speed = 35 miles per hour
Increased speed = 35+15 = 50 miles per hour

Let total distance = 35+D where D is the distance travelled at increased speed

$$Time = \frac{Distance}{Speed}$$

Time taken to travel D at speed of 35 miles per hour = D/35

Time taken to travel D at speed of 50 miles per hour = D/50

Given, (D/35) - 1 = (D/50) + (1/2)

i.e. (D/35) - (D/50) = 1+(1/2)

i.e. 3D / 350 = 3/2

i.e. D = 175

i.e. Total Distance = 35+175 = 210

_________________
Prosper!!!
GMATinsight
Bhoopendra Singh and Dr.Sushma Jha
e-mail: info@GMATinsight.com I Call us : +91-9999687183 / 9891333772
Online One-on-One Skype based classes and Classroom Coaching in South and West Delhi
http://www.GMATinsight.com/testimonials.html

ACCESS FREE GMAT TESTS HERE:22 ONLINE FREE (FULL LENGTH) GMAT CAT (PRACTICE TESTS) LINK COLLECTION
David drives from his home to the airport to catch a flight. He drives   [#permalink] 19 Mar 2019, 07:28
Display posts from previous: Sort by