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GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2508
Given Kudos: 1053
GPA: 3.39
Jane started baby-sitting when she was 18 years old. Whenever she baby
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01 Apr 2021, 05:30
01 Apr 2021, 05:30
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Question Stats:
12% (02:37) correct
87% (00:53) wrong based on 8 sessions
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Jane started baby-sitting when she was 18 years old. Whenever she baby-sat for a child, that child was no more than half her age at the time. Jane is currently 32 years old, and she stopped baby-sitting 10 years ago. What is the current age of the oldest person for whom Jane could have baby-sat?
A. 20
B. 21
C. 22
D. 23
E. 24
A. 20
B. 21
C. 22
D. 23
E. 24
Jane started baby-sitting when she was 18 years old. Whenever she baby
[#permalink]
01 Apr 2021, 20:35
01 Apr 2021, 20:35
4
This is a nice question. I got it wrong the first time.
The error I made was
Jane - now 32 years old
so was 22, ten years ago. Now the child was less than half of her age so child might be 11.
Now after 10 years, the child will be 21.
But this is incorrect.
Whenever she baby-sat for a child, that child was no more than half her age at the time.
We are asked to find the age of the OLDEST person, she could have babysat.
NOW,
When she started babysitting, she was 18 so the child would be 9years approx.
She babysat till she turned 22. So the same child would be 13 years old.
After 10 years, the child will be 23 years old.
Answer D
The error I made was
Jane - now 32 years old
so was 22, ten years ago. Now the child was less than half of her age so child might be 11.
Now after 10 years, the child will be 21.
But this is incorrect.
Whenever she baby-sat for a child, that child was no more than half her age at the time.
We are asked to find the age of the OLDEST person, she could have babysat.
NOW,
When she started babysitting, she was 18 so the child would be 9years approx.
She babysat till she turned 22. So the same child would be 13 years old.
After 10 years, the child will be 23 years old.
Answer D
gmatclubot
Jane started baby-sitting when she was 18 years old. Whenever she baby [#permalink]
01 Apr 2021, 20:35
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