It is currently 22 Mar 2019, 08:56

### 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

# A set has exactly five consecutive positive integers startin

Author Message
TAGS:
Moderator
Joined: 18 Apr 2015
Posts: 5860
Followers: 94

Kudos [?]: 1147 [0], given: 5456

A set has exactly five consecutive positive integers startin [#permalink]  14 Apr 2018, 02:28
Expert's post
00:00

Question Stats:

100% (01:09) correct 0% (00:00) wrong based on 11 sessions
A set has exactly five consecutive positive integers starting with 1. What is the percentage decrease in the average of the numbers when the greatest one of the numbers is removed from the set?

(A) 5
(B) 8.5
(C) 12.5
(D) 15.2
(E) 16.66
[Reveal] Spoiler: OA

_________________
Director
Joined: 07 Jan 2018
Posts: 602
Followers: 7

Kudos [?]: 539 [1] , given: 88

Re: A set has exactly five consecutive positive integers startin [#permalink]  16 Apr 2018, 21:39
1
KUDOS
we are given, set of consecutive integers starting with $$1$$ hence our set consists of:
{$$1,2,3,4,5$$}
avg of this set = $$\frac{1+2+3+4+5}{5} = \frac{15}{5} = 3$$
if the largest number is removed from the set the new set is {$$1,2,3,4$$} as $$5$$ is removed
The avg of the new set is $$\frac{10}{4} = 2.5$$
$$%$$decrease $$= 3-2.5/3 * 100 =16.66%$$
_________________

This is my response to the question and may be incorrect. Feel free to rectify any mistakes

Re: A set has exactly five consecutive positive integers startin   [#permalink] 16 Apr 2018, 21:39
Display posts from previous: Sort by