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GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
Mary purchased 3 theater tickets with an average (arithmetic mean) pri
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31 Jan 2023, 00:25
31 Jan 2023, 00:25
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Mary purchased 3 theater tickets with an average (arithmetic mean) price of $8. If Mary also purchases a fourth theater ticket with a price of $16, what is the average price of all 4 theater tickets?
A. $4
B. $6
C. $8
D. $10
E. $12
A. $4
B. $6
C. $8
D. $10
E. $12
GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
Re: Mary purchased 3 theater tickets with an average (arithmetic mean) pri
[#permalink]
01 Feb 2023, 21:37
01 Feb 2023, 21:37
Expert Reply
Here calculations are not much but if it is calculation intensive, we can work on logic.
Average of 3 is 8.
If we add 16-8 =8 extra, this will increase each number by 8/4=2
So new average=8+2=10
Answer: D
Average of 3 is 8.
If we add 16-8 =8 extra, this will increase each number by 8/4=2
So new average=8+2=10
Answer: D
gmatclubot
Re: Mary purchased 3 theater tickets with an average (arithmetic mean) pri [#permalink]
01 Feb 2023, 21:37
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