BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Average Salary

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 266
Joined: Mon Oct 19, 2009 9:46 pm
Thanked: 8 times
GMAT Score:690

Average Salary

by pkw209 » Mon May 03, 2010 3:24 pm
Last year the average salary of the 10 employees of company x was $42,800. What is the average salary of the same 10 employees this year?

a) For 8 of the 10 employees, this year's salary is 15 percent greater than last year's salary.

b) For 2 of the 10 employees, this year's salary is the same as last year's salary.
Top
Source: — Data Sufficiency |
Legendary Member
Posts: 576
Joined: Sat Mar 13, 2010 8:31 pm
Thanked: 97 times
Followed by:1 members

by liferocks » Mon May 03, 2010 5:29 pm
neither of the statement is not sufficient alone.

combining ,let 8 employee had salary 100x last year and 2 had 100y last year

so average 800x+200y/10=80x+20y=42800
or 4x+y=2140

this year average is (115*8) x+200y/10=920x+200y/10=92x+20y=23(4x+y)-3y

unless we know y average cannot be calculated.
hence ans E
"If you don't know where you are going, any road will get you there."
Lewis Carroll
Top
Post new topic Post Reply
• Page 1 of 1