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20 Dec 2019, 03:46
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All the high school students in a private school have opted for music, sports, or both. 75% of these students have opted for one of the two. Overall 120 students have opted for Music. If 40% of the students have opted for sports only, how many students have opted for both?
A. 25
B. 30
C. 40
D. 50
E. 60
A. 25
B. 30
C. 40
D. 50
E. 60
20 Dec 2019, 19:33
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First, we can deduce that no student is without an activity,
By arranging the info in table form, we can find that:
120 + 0.4x = x , so x = 200
0.75x = 0.4x + y, so y = 70
so z = 50 --> which is Both
By arranging the info in table form, we can find that:
120 + 0.4x = x , so x = 200
0.75x = 0.4x + y, so y = 70
so z = 50 --> which is Both
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21 Nov 2023, 23:00
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Simple question if you have full understanding,
40% is only sports but 120 people learn music. This 120 includes who learns only music and also includes who learns music and do sports. So this 120 is 60% of the total number since everyone learns atleast 1. So the total should be 200. So 25% of 200 is 50
Posted from my mobile device
40% is only sports but 120 people learn music. This 120 includes who learns only music and also includes who learns music and do sports. So this 120 is 60% of the total number since everyone learns atleast 1. So the total should be 200. So 25% of 200 is 50
Posted from my mobile device
