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PERCENT OF THE 300 PEOPLE IN GROUP 1 AND THE 400 PEOPLE
PERCENT OF THE 300 PEOPLE IN GROUP 1 AND THE 400 PEOPLE
游客
2024-01-12
58
管理
问题
PERCENT OF THE 300 PEOPLE IN GROUP 1 AND THE 400 PEOPLE
IN GROUP 2 WHO HAVE SELECTED AILMENTS
[br] The number of people in group 1 who have the ailment wheezing(allergic)is what percent greater than the number of people in group 1 who have the ailment wheezing(nonallergic)?
选项
A、0.5
B、0.75
C、1.5
D、2
E、3
答案
C
解析
In group 1, there are 300 people, 5% of whom have allergic wheezing and 2% of whom have nonallergic wheezing. That is,(0.05)(300)people, or 15 people, have allergic wheezing and(0.02)(300)people, or 6 people, have nonallergic wheezing. Therefore, in group 1, the number of people who have allergic wheezing exceeds the number who have nonallergic wheezing by 9, which is (9/6)(100%)greater than 6, or 150% greater than 6. The correct answer is Choice C.
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