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

 It is currently 20 Feb 2019, 16:19

### 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

## Events & Promotions

###### Events & Promotions in February
PrevNext
SuMoTuWeThFrSa
272829303112
3456789
10111213141516
17181920212223
242526272812
Open Detailed Calendar
• ### Free GMAT Prep Hour

February 20, 2019

February 20, 2019

08:00 PM EST

09:00 PM EST

Strategies and techniques for approaching featured GMAT topics. Wednesday, February 20th at 8 PM EST

February 21, 2019

February 21, 2019

10:00 PM PST

11:00 PM PST

Kick off your 2019 GMAT prep with a free 7-day boot camp that includes free online lessons, webinars, and a full GMAT course access. Limited for the first 99 registrants! Feb. 21st until the 27th.

# At some point while traveling to a city Mr. Hock increased his speed b

Author Message
TAGS:

### Hide Tags

Manager
Joined: 25 Dec 2018
Posts: 148
Location: India
GMAT 1: 490 Q47 V13
GPA: 2.86
At some point while traveling to a city Mr. Hock increased his speed b  [#permalink]

### Show Tags

09 Feb 2019, 09:22
1
00:00

Difficulty:

25% (medium)

Question Stats:

76% (01:46) correct 24% (02:30) wrong based on 37 sessions

### HideShow timer Statistics

At some point while traveling to a city Mr. Hock increased his speed by 20%. After traveling for some distance at that speed, he reduced his speed by 15%. After this deduction Mr. Hock's speed was 51 km/hour. What was Mr. Hock's original speed?

A. 42 km/hour
B. 47 km/hour
C. 49 km/hour
D. 50 km/hour
E. 52 km/hour
VP
Joined: 09 Mar 2018
Posts: 1001
Location: India
Re: At some point while traveling to a city Mr. Hock increased his speed b  [#permalink]

### Show Tags

09 Feb 2019, 09:36
akurathi12 wrote:
At some point while traveling to a city Mr. Hock increased his speed by 20%. After traveling for some distance at that speed, he reduced his speed by 15%. After this deduction Mr. Hock's speed was 51 km/hour. What was Mr. Hock's original speed?

A. 42 km/hour
B. 47 km/hour
C. 49 km/hour
D. 50 km/hour
E. 52 km/hour

Successive % change = 20 - 15 -300/100 = 2%

Now original speed = 51 - 2% 51 = 51-1

D
_________________

If you notice any discrepancy in my reasoning, please let me know. Lets improve together.

Quote which i can relate to.
Many of life's failures happen with people who do not realize how close they were to success when they gave up.

Intern
Joined: 09 Feb 2017
Posts: 1
Re: At some point while traveling to a city Mr. Hock increased his speed b  [#permalink]

### Show Tags

11 Feb 2019, 16:42
Increase 20% = 1+.2 =1.2
Decrease 15% = 1-.15= .85

Multiply (1.2)*(.85)= (12)*(80+5)= 960+60=1020 move the decimal =1.020% increase
If the final speed was 51 its original speed must be around 50 km/hr

C
Re: At some point while traveling to a city Mr. Hock increased his speed b   [#permalink] 11 Feb 2019, 16:42
Display posts from previous: Sort by