• 5-Day Free Trial
5-day free, full-access trial TTP Quant

Available with Beat the GMAT members only code

• 5 Day FREE Trial
Study Smarter, Not Harder

Available with Beat the GMAT members only code

• 1 Hour Free
BEAT THE GMAT EXCLUSIVE

Available with Beat the GMAT members only code

• Free Trial & Practice Exam
BEAT THE GMAT EXCLUSIVE

Available with Beat the GMAT members only code

• Magoosh
Study with Magoosh GMAT prep

Available with Beat the GMAT members only code

• Get 300+ Practice Questions
25 Video lessons and 6 Webinars for FREE

Available with Beat the GMAT members only code

• Award-winning private GMAT tutoring
Register now and save up to $200 Available with Beat the GMAT members only code • Free Practice Test & Review How would you score if you took the GMAT Available with Beat the GMAT members only code • Free Veritas GMAT Class Experience Lesson 1 Live Free Available with Beat the GMAT members only code • FREE GMAT Exam Know how you'd score today for$0

Available with Beat the GMAT members only code

## If Chris saved $400 of his earnings last month, how much... tagged by: swerve This topic has 1 expert reply and 0 member replies ### Top Member swerve Master | Next Rank: 500 Posts Joined 29 Oct 2017 Posted: 339 messages Followed by: 4 members #### If Chris saved$ 400 of his earnings last month, how much...

Tue Nov 07, 2017 10:58 am
If Chris saved $400 of his earnings last month, how much did Chris earn last month? 1) Chirs spent 1/3 of his last month's earnings on rentals saved 1/4 of the reaminder. 2) last month, Chris paid three times as much in loan payments as he saved. The OA is A. Please, can any expert explain this DS question for me? I have many difficulties to understand why that is the correct answer. Thanks. ### GMAT/MBA Expert Rich.C@EMPOWERgmat.com Elite Legendary Member Joined 23 Jun 2013 Posted: 9445 messages Followed by: 480 members Upvotes: 2867 GMAT Score: 800 Tue Nov 07, 2017 7:34 pm Hi swerve, We're told that Chris saved$400 of his earnings last month. We're asked for the total amount Chris EARNED last month.

1) Chris spent 1/3 of his last month's EARNINGS on rentals and saved 1/4 of the remainder.

Fact 1 tells us that 1/4 of 2/3 of Chris's earnings were saved. We can combine this information with what we were told in the prompt (that Chris Saved $400) and 'work backwards' to find the total earned.$400 = 1/4 of the 'remainder'
$1600 = the 'remainder' the 'remainder' =$1600 = 2/3 of the total earned
$1600 = (2/3)(X)$2400 = X
Thus, Chris earned $2400, spent 1/3 of that (re:$800) on rentals and had a 'remainder of $2400-$800 = $1600. He saved 1/4 of that remainder (which matches the$400 that the prompt stated was the savings).
Fact 1 is SUFFICIENT

2) Last month, Chris paid three times as much in loan payments as he saved.

With Fact 2, we can determine the amount of money that Chris spent on loan payments (3 times $400 =$1200), but we don't know if Chris spent money on anything ELSE. Fact 2 ultimately tells us that Chris earned AT LEAST $1200+$400 = \$1600, but he could have earned more than that.
Fact 2 is INSUFFICIENT

Final Answer: A

GMAT assassins aren't born, they're made,
Rich

_________________
Contact Rich at Rich.C@empowergmat.com

### Top First Responders*

1 GMATGuruNY 70 first replies
2 Rich.C@EMPOWERgma... 42 first replies
3 Brent@GMATPrepNow 40 first replies
4 Jay@ManhattanReview 24 first replies
5 Terry@ThePrinceto... 10 first replies
* Only counts replies to topics started in last 30 days
See More Top Beat The GMAT Members

### Most Active Experts

1 GMATGuruNY

The Princeton Review Teacher

133 posts
2 Scott@TargetTestPrep

Target Test Prep

113 posts
3 Rich.C@EMPOWERgma...

EMPOWERgmat

111 posts
4 Jeff@TargetTestPrep

Target Test Prep

111 posts
5 Brent@GMATPrepNow

GMAT Prep Now Teacher

90 posts
See More Top Beat The GMAT Experts