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Scores of boys in a certain class have range of 20.4 and sco
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Updated on: 01 Oct 2019, 04:45
Updated on: 01 Oct 2019, 04:45
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47% (01:26) correct
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Scores of boys in a certain class have range of 20.4 and scores of girls in the same class have range of 32.6.
Which of the following statements individually provide(s) sufficient additional information to determine the range of the scores of all the
students in the class?
Indicate all such statements.
A. Median score of boys is same as the median score of girls
B. Highest score among boys is 4 units greater than the lowest score among girls
C. Maximum score among the girls is at most 2.2 more than the maximum score among boys
Which of the following statements individually provide(s) sufficient additional information to determine the range of the scores of all the
students in the class?
Indicate all such statements.
A. Median score of boys is same as the median score of girls
B. Highest score among boys is 4 units greater than the lowest score among girls
C. Maximum score among the girls is at most 2.2 more than the maximum score among boys
Re: Scores of boys in a certain class have range of 20.4 and sco
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30 Sep 2019, 23:56
30 Sep 2019, 23:56
1
This question is similar to OG.
Here is the link https://gre.myprepclub.com/forum/the-range-of-the-heights-of-the-female-students-in-a-certain-class-is-13-2-inches-1761.html
More examples :: https://gre.myprepclub.com/forum/qotd-10-the-table-above-shows-the-frequency-distribution-of-2499.html
Here is the link https://gre.myprepclub.com/forum/the-range-of-the-heights-of-the-female-students-in-a-certain-class-is-13-2-inches-1761.html
More examples :: https://gre.myprepclub.com/forum/qotd-10-the-table-above-shows-the-frequency-distribution-of-2499.html
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Joined: 20 Jun 2019
Posts: 181
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GRE 1: Q160 V161
GRE 2: Q165 V159
Re: Scores of boys in a certain class have range of 20.4 and sco
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29 Jun 2020, 00:43
29 Jun 2020, 00:43
2
We know that range of boys=20.4 and range of girls=32.6. From this we can assume variables and say that a–b=20.4 and c–d=32.6. The total range, which we need to find, is nothing but c–b.
A- Median is the middle value. Range is max–min. This doesn't help.
B- This esentially states that a=d+4. Now we can say that c=32.6+d and b=aa–20.4. This means that 32.6+d–(a–20.4) => 32.6+d–(d+4–20.4)= 49. Correct.
C- This states that c=2.2a and since b=a–20.4 we can say 2.2a–(a–20.4)=1.2a+20.4. Since we don't know the value of a, this is incorrect.
A- Median is the middle value. Range is max–min. This doesn't help.
B- This esentially states that a=d+4. Now we can say that c=32.6+d and b=aa–20.4. This means that 32.6+d–(a–20.4) => 32.6+d–(d+4–20.4)= 49. Correct.
C- This states that c=2.2a and since b=a–20.4 we can say 2.2a–(a–20.4)=1.2a+20.4. Since we don't know the value of a, this is incorrect.
