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Each of 400 students at High School X is enrolled in exactly
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20 Jul 2018, 10:13
20 Jul 2018, 10:13
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Question Stats:
66% (02:09) correct
33% (01:35) wrong based on 42 sessions
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Each of 400 students at High School X is enrolled in exactly one math class. If 35% are taking Trigonometry or Calculus, how many students are taking Geometry?
A. 10
B. 25
C. 40
D. 100
E. 150
Re: Each of 400 students at High School X is enrolled in exactly
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21 Jul 2018, 20:25
21 Jul 2018, 20:25
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Answer is D ,
We have two Equations Eq. 1 : n + p = 35
2n + 3p = 80
Solving for these two we would get p = 25 % so 0.25 * 400 = 100 Students
We have two Equations Eq. 1 : n + p = 35
2n + 3p = 80
Solving for these two we would get p = 25 % so 0.25 * 400 = 100 Students
Re: Each of 400 students at High School X is enrolled in exactly
[#permalink]
24 Oct 2021, 11:35
24 Oct 2021, 11:35
1
n+p = 35
2p+n = 45
Then, solve the equation n = 25%
Second equation told in above is not clear
Posted from my mobile device
2p+n = 45
Then, solve the equation n = 25%
Second equation told in above is not clear
Posted from my mobile device
