|
|
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.
25 May 2018, 02:34
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
87% (01:35) correct
13%
(01:50)
wrong
based on 624
sessions
History
Date
Time
Result
Not Attempted Yet
At Larry's Auto Supply Store, Brand X antifreeze is sold by the gallon and Brand Y motor oil is sold by the quart. Excluding sales tax, what is the total cost for 1 gallon of Brand X antifreeze and 1 quart of Brand Y motor oil?
(1) Excluding sales tax, the total cost for 6 gallons of Brand X antifreeze and 10 quarts of Brand Y motor oil is $58. (There is no quantity discount.)
(2) Excluding sales tax, the total cost for 4 gallons of Brand X antifreeze and 12 quarts of Brand Y motor oil is $44. (There is no quantity discount.)
(A) Statement 1 alone is sufficient, but statement 2 alone is not.
(B) Statement 2 alone is sufficient, but statement 1 alone is not.
(C) Both statements together are sufficient, but neither alone is sufficient.
(D) Each statement alone is sufficient.
(E) Neither statement is sufficient, even when combined.
(1) Excluding sales tax, the total cost for 6 gallons of Brand X antifreeze and 10 quarts of Brand Y motor oil is $58. (There is no quantity discount.)
(2) Excluding sales tax, the total cost for 4 gallons of Brand X antifreeze and 12 quarts of Brand Y motor oil is $44. (There is no quantity discount.)
(A) Statement 1 alone is sufficient, but statement 2 alone is not.
(B) Statement 2 alone is sufficient, but statement 1 alone is not.
(C) Both statements together are sufficient, but neither alone is sufficient.
(D) Each statement alone is sufficient.
(E) Neither statement is sufficient, even when combined.
If this question felt shaky,
try an adaptive mini quiz of similar problems in
GMAT Club Forum Quiz →. Free plan gives 5 questions per day.
25 May 2018, 02:55
Kudos
Bookmarks
Bunuel
Lets assume 1 gallon of Brand X antifreeze costs=x and 1 quarts of Brand Y antifreeze costs=y , Thus we need to find: \(x+y= ?\)
(1)==> \(6x+10y=58\)==>\(3x+5y=29\)......a .......... cannot be reduced any further/no specific info.......... Thus insufficient
(2)==> \(4x+12y=44\)==>\(x+3y=11\).......b ............. cannot be reduced any further/no specific info.......... Thus insufficient
(1)+(2)==> \(a-b\) ==>\(2x+2y=18\)==>\(x+y=9\)........................................................................... Thus Sufficient
Hence I would go for option C.
22 Jun 2019, 23:49
Kudos
Bookmarks
could anyone explain when and why GMAT use one variable and one equation and when 2 variable with one equation ?
because sometimes both are accept and have suffice answer !!!!
6x+10y=58 ......> answer is x=3 and y=4 and i think it is suffice ! and answer can be A.
because sometimes both are accept and have suffice answer !!!!
6x+10y=58 ......> answer is x=3 and y=4 and i think it is suffice ! and answer can be A.
