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

 It is currently 19 Jun 2019, 00:08

### 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

### Show Tags

27 Dec 2017, 01:10
00:00

Difficulty:

15% (low)

Question Stats:

93% (01:15) correct 7% (01:16) wrong based on 44 sessions

### HideShow timer Statistics

On 3 sales Tom has received commissions of $250,$95, and $175, and has two additional sales pending. If Tom is to receive an average (arithmetic mean) commission of exactly$150 on the 5 sales, then the average (arithmetic mean) of the final two sales must be

A. 60
B. 80
C. 115
D. 230
E. 280

_________________
examPAL Representative
Joined: 07 Dec 2017
Posts: 1072

### Show Tags

27 Dec 2017, 11:34
Bunuel wrote:
On 3 sales Tom has received commissions of $250,$95, and $175, and has two additional sales pending. If Tom is to receive an average (arithmetic mean) commission of exactly$150 on the 5 sales, then the average (arithmetic mean) of the final two sales must be

A. 60
B. 80
C. 115
D. 230
E. 280

$$250 + 95 + 175 + x + y = 150*5$$

Or, $$520 + ( x + y ) = 750$$

Or, ( x + y ) = $$230$$

So, Average from the 2 additional sales must be $$\frac{230}{2} = 115$$

Thus, answer will be (C) 115
_________________
Thanks and Regards

Abhishek....

PLEASE FOLLOW THE RULES FOR POSTING IN QA AND VA FORUM AND USE SEARCH FUNCTION BEFORE POSTING NEW QUESTIONS

How to use Search Function in GMAT Club | Rules for Posting in QA forum | Writing Mathematical Formulas |Rules for Posting in VA forum | Request Expert's Reply ( VA Forum Only )
Manager
Joined: 24 Nov 2016
Posts: 153
Re: On 3 sales Tom has received commissions of $250,$95, and $175, and ha [#permalink] ### Show Tags 28 Dec 2017, 03:33 Bunuel wrote: On 3 sales Tom has received commissions of$250, $95, and$175, and has two additional sales pending. If Tom is to receive an average (arithmetic mean) commission of exactly $150 on the 5 sales, then the average (arithmetic mean) of the final two sales must be A. 60 B. 80 C. 115 D. 230 E. 280 $$Average=\frac{Total.Sales}{Number.Sales}$$, and 2 more sales = $$2x$$ So $$150=\frac{(250+95+175+2x)}{5}$$, $$150(5)=(520+2x)$$, $$x=\frac{750-520}{2}=115$$ (C) is the answer. Re: On 3 sales Tom has received commissions of$250, $95, and$175, and ha   [#permalink] 28 Dec 2017, 03:33
Display posts from previous: Sort by