GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Each of 400 students at High School X is enrolled in exactly
[#permalink]
20 Jul 2018, 10:13
20 Jul 2018, 10:13
Expert Reply
4
Bookmarks
00:00
Question Stats:
65% (02:10) correct
34% (01:38) wrong based on 38 sessions
Hide Show timer Statistics
Attachment:
class.jpg [ 23.92 KiB | Viewed 4114 times ]
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
[#permalink]
21 Jul 2018, 20:25
21 Jul 2018, 20:25
1
1
Bookmarks
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
