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Jayla started babysitting when she was 18 years old. Whenever she baby
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23 Feb 2023, 06:04
23 Feb 2023, 06:04
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Jayla started babysitting when she was 18 years old. Whenever she babysat for a child, that child was no more than half her age at the time. Jayla is currently 32 years old, and she stopped babysitting 10 years ago. What is the current age of the oldest person for whom Jayla could have babysat?
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Re: Jayla started babysitting when she was 18 years old. Whenever she baby
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11 Mar 2023, 06:46
11 Mar 2023, 06:46
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You are given actual ages for Jayla, therefore, the easiest way to solve the problem is to think about the extreme scenarios. At one extreme, 18-year-old Jayla could have babysat a child of age 9. Because Jayla is now 32, that child would now be 23. At the other extreme, 22-year-old Jane could have babysat a child of age 11. If Jayla is now 32, that child would be 21. You can see that the first scenario yields the oldest possible current age, 23, of a child that Jayla babysat.
You are given actual ages for Jayla, therefore, the easiest way to solve the problem is to think about the extreme scenarios. At one extreme, 18-year-old Jayla could have babysat a child of age 9. Because Jayla is now 32, that child would now be 23. At the other extreme, 22-year-old Jane could have babysat a child of age 11. If Jayla is now 32, that child would be 21. You can see that the first scenario yields the oldest possible current age, 23, of a child that Jayla babysat.
gmatclubot
Re: Jayla started babysitting when she was 18 years old. Whenever she baby [#permalink]
11 Mar 2023, 06:46
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