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.
If Sierra’s scores on her first three tests were 90, 93, and
[#permalink]
20 Mar 2020, 11:28
20 Mar 2020, 11:28
Expert Reply
00:00
Question Stats:
94% (00:37) correct
5% (01:00) wrong based on 18 sessions
Hide Show timer Statistics
If Sierra’s scores on her first three tests were 90, 93, and 98, what must she score on the fourth test to have 95 as her test average?
A. 95
B. 96
C. 97
D. 98
E. 99
Kudos for the right answer and explanation
A. 95
B. 96
C. 97
D. 98
E. 99
Kudos for the right answer and explanation
Re: If Sierra’s scores on her first three tests were 90, 93, and
[#permalink]
20 Mar 2020, 20:55
20 Mar 2020, 20:55
1
\( Average = \frac{Sum of observations}{no. of observations}\)
Let the fourth test have a score of X.
\(95 = \frac{90+93+98+X}{4}\)
\(95 \times 4 = 281 + X\)
\(380 - 281 = X\)
\(X = 99\)
OA,E
Let the fourth test have a score of X.
\(95 = \frac{90+93+98+X}{4}\)
\(95 \times 4 = 281 + X\)
\(380 - 281 = X\)
\(X = 99\)
OA,E
Carcass wrote:
If Sierra’s scores on her first three tests were 90, 93, and 98, what must she score on the fourth test to have 95 as her test average?
A. 95
B. 96
C. 97
D. 98
E. 99
Kudos for the right answer and explanation
A. 95
B. 96
C. 97
D. 98
E. 99
Kudos for the right answer and explanation
gmatclubot
Re: If Sierra’s scores on her first three tests were 90, 93, and [#permalink]
20 Mar 2020, 20:55
Moderators:
