|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
18 Jun 2011, 04:31
Kudos
Bookmarks
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
75% (01:41) correct
25%
(01:43)
wrong
based on 12
sessions
History
Date
Time
Result
Not Attempted Yet
A company pays project contractors a rate of "a" dollars for the first hour and "b" dollars for each additional hour after the first, where a > b.
In a given month, a contractor worked on two different projects that lasted 2 and 4 hours, respectively. The company has the option to pay for each project individually or for all the projects at the end of the month. Which arrangement would be cheaper for the company and how much would the company save?
A) Per month, with savings of $(a + b)
B) Per month, with savings of $(a - b)
C) The two options would cost an equal amount.
D) Per project, with savings of $(a + b)
E) Per project, with savings of $(a - b)
In a given month, a contractor worked on two different projects that lasted 2 and 4 hours, respectively. The company has the option to pay for each project individually or for all the projects at the end of the month. Which arrangement would be cheaper for the company and how much would the company save?
A) Per month, with savings of $(a + b)
B) Per month, with savings of $(a - b)
C) The two options would cost an equal amount.
D) Per project, with savings of $(a + b)
E) Per project, with savings of $(a - b)
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Problem Solving (PS) Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
jamifahad
Joined: 03 Mar 2010
Last visit: 14 Mar 2015
Posts: 256
Own Kudos:
Given Kudos: 22
Schools: Simon '16 (M$)
18 Jun 2011, 05:27
Kudos
Bookmarks
Per Project, company will pay as follows:
For 2 hours work = a+b
For 4 hours work = a+3b
Total = 2a+4b
Per Month, company will pay for 6 hours work = a+5b
Total per contract - total per month
2a+4b - (a+5b)
a-b
Since a>b Amount 2a+4b(per contract amount) > a+5b (per project amount) by a-b.
Hence per month payment will be cheaper by a-b .
OA B
For 2 hours work = a+b
For 4 hours work = a+3b
Total = 2a+4b
Per Month, company will pay for 6 hours work = a+5b
Total per contract - total per month
2a+4b - (a+5b)
a-b
Since a>b Amount 2a+4b(per contract amount) > a+5b (per project amount) by a-b.
Hence per month payment will be cheaper by a-b .
OA B
18 Jun 2011, 06:04
Kudos
Bookmarks
guygmat
If per project:
2 hours-> Payment=a+b
4 hours-> Payment=a+3b
Total = a+b+a+3b=2a+4b=a+a+4b-----------------1
Monthly;
6 hours-> Payment=a+5b=a+4b+b-----------------2
Comparing 1 and 2; a+4b gets canceled and we know, a>b; thus 1 is more expensive payment option for the company.
Q: Which arrangement would be cheaper for the company and how much would the company save?
Ans: Monthly payment would be cheaper.
How much is "a" greater than "b"; "a-b", which is saving for the company.
Ans: "B"
