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14 Mar 2024, 10:07
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Dropdown 1: 4
Dropdown 2: 17
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
98% (01:04) correct
2%
(01:41)
wrong
based on 1520
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The graph shows, for each year of a 17-year period, the number of pairs of twins born in Region Z. In that time, the ratio of the number of twin births to the number of all births was essentially constant.
Select from each drop-down menu the option that creates the statement that is most strongly supported by the information provided.
Of the 17 years appearing in the graph, Year likely had the greatest number of births in Region Z, and Year likely had the least number of births in Region Z.
The graph shows, for each year of a 17-year period, the number of pairs of twins born in Region Z. In that time, the ratio of the number of twin births to the number of all births was essentially constant.
Select from each drop-down menu the option that creates the statement that is most strongly supported by the information provided.
Of the 17 years appearing in the graph, Year likely had the greatest number of births in Region Z, and Year likely had the least number of births in Region Z.
ID: 700250
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Official Answer
Dropdown 1: 4
Dropdown 2: 17
19 Mar 2024, 09:55
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IMO it's 4,17
Ratio = C
Pair of twins/Total berths = C
Total Births = Pair/C
So total births is directly proportional to Par of twins. So clearly from chart 4 is max and 17 is min
Ratio = C
Pair of twins/Total berths = C
Total Births = Pair/C
So total births is directly proportional to Par of twins. So clearly from chart 4 is max and 17 is min
General Discussion
13 Apr 2024, 07:02
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Quote:
We are given the number of pairs of twins, not the number of births. But we are given that the ratio is constant. This means that if this ratio is 1:10, every year, there was 1 pair of twin births for 9 single births. If some year there were 10 pairs of twin births, the number of single births would have been 90 etc.
So in some year, if there were more twin births, it means more single births too and hence more total births.
Of the 17 years appearing in the graph, Year ___ likely had the greatest number of births in Region Z, and Year ___ likely had the least number of births in Region Z.
Year 4 is shown to have greatest number of twin births and year 17 is shown to have least. Hence the greatest number of births (in all) would be greatest in year 4 too and least in year 17.
ANSWER: 4, 17
