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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Aquarium A holds 150 gallons more sea water than does Aquar
[#permalink]
07 Jun 2017, 02:32
07 Jun 2017, 02:32
Expert Reply
00:00
Question Stats:
81% (02:08) correct
19% (02:13) wrong based on 100 sessions
Hide Show timer Statistics
Aquarium A holds 150 gallons more sea water than does Aquarium B, and both aquariums are currently filled to capacity. If 20 gallons are removed from each aquarium, then Aquarium A would hold four times as much sea water as Aquarium B holds. What is the combined total number of gallons of sea water that can be held in both aquariums?
A) 290
B) 250
C) 220
D) 200
E) 70
Re: Aquarium A holds 150 gallons more sea water than does Aquar
[#permalink]
20 Sep 2017, 05:43
20 Sep 2017, 05:43
The statement in formulas becomes \(A=B+150\) and \(A-20=4(B-20)\). Substituting B from the first equation in the second one we get \(B=70\). Substituting B back in the first equation we get \(A=220\). Thus, the sum of the capacities is 290 and answer is A.
Re: Aquarium A holds 150 gallons more sea water than does Aquar
[#permalink]
30 Jan 2018, 23:46
30 Jan 2018, 23:46
Let, aquarium B holds x gallon water.
So aquarium A holds x+150 gallons.
20 gallons are removed from each aquarium, so A holds x+130 gallons and B holds x-20 gallons.
Then according to the question x+130=4*(x-20) or, x=70
B holds 70 gallons, A holds 220 gallons. Together they hold 290 gallons.
So A is the answer.
So aquarium A holds x+150 gallons.
20 gallons are removed from each aquarium, so A holds x+130 gallons and B holds x-20 gallons.
Then according to the question x+130=4*(x-20) or, x=70
B holds 70 gallons, A holds 220 gallons. Together they hold 290 gallons.
So A is the answer.
