Last visit was: 15 Nov 2024, 02:32 It is currently 15 Nov 2024, 02:32

Close

GRE Prep 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
Your Progress

every week, we’ll send you an estimated GRE score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel
Verbal Expert
Joined: 18 Apr 2015
Posts: 29960
Own Kudos [?]: 36223 [0]
Given Kudos: 25903
Send PM
avatar
Retired Moderator
Joined: 20 Apr 2016
Posts: 1307
Own Kudos [?]: 2273 [0]
Given Kudos: 251
WE:Engineering (Energy and Utilities)
Send PM
avatar
Manager
Manager
Joined: 19 Mar 2018
Posts: 64
Own Kudos [?]: 37 [0]
Given Kudos: 0
Send PM
avatar
Manager
Manager
Joined: 22 Jan 2020
Posts: 120
Own Kudos [?]: 239 [0]
Given Kudos: 10
Send PM
Re: Reservoir A contains 450 million gallons of water more than [#permalink]
A=450+B

If 100 million gallons are drained from A then A becomes A-100, and if those 100 million gallons are given to B then B is now B+100

So if after this occurs A has twice what B has then we get the equality

A-100=2(B+100)
From here we solve for B in order to substitute into our initially equality

A-100=2B+200
A-300=2B
B=(1/2)A-150

Then plug into initial equality

A=450+(1/2)A-150
(1/2)A=300
A=600

Final Answer= 600
Prep Club for GRE Bot
Re: Reservoir A contains 450 million gallons of water more than [#permalink]
Moderators:
GRE Instructor
78 posts
GRE Forum Moderator
37 posts
Moderator
1111 posts
GRE Instructor
234 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne