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12 Nov 2024, 01:30
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B
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Difficulty:
95%
(hard)
Question Stats:
31% (02:53) correct
69%
(02:19)
wrong
based on 116
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The median age of seven children in group A was 13. The median age of nine children in group B was 9. Four children — the youngest and the oldest in each group — were exchanged between the groups. What was the new median age of the children in group B?
(1) Before the exchange, the oldest child in group B was 12 years old.
(2) Before the exchange, the youngest child in group A was 8 years old.
(1) Before the exchange, the oldest child in group B was 12 years old.
(2) Before the exchange, the youngest child in group A was 8 years old.
12 Nov 2024, 06:12
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Option E is the correct answer.
The median age of 7 children in group A was 13;
The median age of 9 children in group B was 9;
4 children - the youngest and the oldest in each group - were exchanged between the groups. Determine the new median age of the children in group B.
1. Before the exchange, the oldest child in group B was 12 years old. However, we don't have enough information about the ages of the other children or how the exchange affects the median. Therefore, insufficient on its own.
2. Before the exchange, the youngest child in group A was 8 years old. Similar to statement 1, knowing the youngest child's age in group A doesn't give enough information to determine the new median of group B after the exchange. Therefore, insufficient on its own.
Even with both statements, we lack detailed information about the specific ages of the other children and the distribution of ages within group B after the exchange. Hence, we cannot precisely determine the new median for group B. Therefore, the statements together are insufficient to answer the question.
The median age of 7 children in group A was 13;
The median age of 9 children in group B was 9;
4 children - the youngest and the oldest in each group - were exchanged between the groups. Determine the new median age of the children in group B.
1. Before the exchange, the oldest child in group B was 12 years old. However, we don't have enough information about the ages of the other children or how the exchange affects the median. Therefore, insufficient on its own.
2. Before the exchange, the youngest child in group A was 8 years old. Similar to statement 1, knowing the youngest child's age in group A doesn't give enough information to determine the new median of group B after the exchange. Therefore, insufficient on its own.
Even with both statements, we lack detailed information about the specific ages of the other children and the distribution of ages within group B after the exchange. Hence, we cannot precisely determine the new median for group B. Therefore, the statements together are insufficient to answer the question.
12 Nov 2024, 13:54
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Hi every body, for me, ans b
the first is irrelevant but the second is telling that the range because median is about the range, that nothnig will change the median's b
because the youngest going to b is 8 (under the median), and the oldest is at least 13 (above the median), it won't change
let me know if i'm wrong because i'm not sure
the first is irrelevant but the second is telling that the range because median is about the range, that nothnig will change the median's b
because the youngest going to b is 8 (under the median), and the oldest is at least 13 (above the median), it won't change
let me know if i'm wrong because i'm not sure
