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Register now and save up to $200 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 • Free Trial & Practice Exam BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • 5 Day FREE Trial Study Smarter, Not Harder Available with Beat the GMAT members only code • 5-Day Free Trial 5-day free, full-access trial TTP Quant Available with Beat the GMAT members only code ## Time and Average This topic has 2 member replies tsmith93 Senior | Next Rank: 100 Posts Joined 19 Feb 2010 Posted: 32 messages Upvotes: 1 #### Time and Average Wed Mar 03, 2010 6:35 pm Thirty years ago, Mr. and Mrs. Lopez purchased a house. On average, the value of the house has doubled every 6 years. If the house is worth$320,000 today, what did they pay for it 30 years ago?

(A)$5,000 (B)$10,000
(C)$64,000 (D)$160,000
(E)\$320,000*2^5

herbalsejagat Newbie | Next Rank: 10 Posts
Joined
13 Sep 2017
Posted:
6 messages
Followed by:
1 members
Tue Sep 19, 2017 7:39 pm
Are we sure about the OA on this one?

truplayer256 Master | Next Rank: 500 Posts
Joined
15 Jan 2009
Posted:
392 messages
76
Wed Mar 03, 2010 8:19 pm
Let the price that Mr. and Mrs. Lopez spent on the house be represented by the variable x. Then,

2x- 6 years later

4x-12 years later

8x-18 years later

16x-24 years later

32x-30 years later

32x=320000

x=10,000

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