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In three years, Janice will be three times as old as her daughter. Six
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15 Apr 2021, 03:48
15 Apr 2021, 03:48
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Question Stats:
64% (02:11) correct
35% (03:47) wrong based on 17 sessions
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In three years, Janice will be three times as old as her daughter. Six years ago, her age was her daughter’s age squared. How old is Janice?
A. 18
B. 36
C. 40
D. 42
E. 45
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
A. 18
B. 36
C. 40
D. 42
E. 45
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: In three years, Janice will be three times as old as her daughter. Six
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15 Apr 2021, 06:06
15 Apr 2021, 06:06
1
Carcass wrote:
In three years, Janice will be three times as old as her daughter. Six years ago, her age was her daughter’s age squared. How old is Janice?
A. 18
B. 36
C. 40
D. 42
E. 45
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
A. 18
B. 36
C. 40
D. 42
E. 45
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
GIVEN: SIX YEARS AGO, Janice's age was her daughter’s age squared.
Take each answer choice (Janice's PRESENT age) and subtract 6 years to see which one(s) yield(s) the square of an integer.
A. 18 - 6 = 12. Since 12 is NOT the square of an integer, ELIMINATE A
B. 36 - 6 = 30. Since 30 is NOT the square of an integer, ELIMINATE B
C. 40 - 6 = 34. Since 34 is NOT the square of an integer, ELIMINATE C
D. 42 - 6 = 36. Since 36 IS the square of an integer, KEEP D
E. 45 - 6 = 39. Since 39 is NOT the square of an integer, ELIMINATE E
Answer: D
ASIDE: It doesn't take long to confirm that D is, indeed, the correct answer.
Cheers,
Brent
Re: In three years, Janice will be three times as old as her daughter. Six
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18 Feb 2023, 12:41
18 Feb 2023, 12:41
Hi Brent GreenlightTestPrep
How to write alegbra way of her age was her daughter’s age squared? Thanks Brent
How to write alegbra way of her age was her daughter’s age squared? Thanks Brent
