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One-fifth of the students at a nursery school are 4 years old or older. If 16 students have not yet reached their...

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by AAPL » Tue Jul 21, 2020 11:54 am
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One-fifth of the students at a nursery school are 4 years old or older. If 16 students have not yet reached their third birthday and a total of 40 students are not between 3 years old and 4 years old, how many children are in the nursery school?

A. 120
B. 96
C. 70
D. 60
E. 24

OA A
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Re: One-fifth of the students at a nursery school are 4 years old or older. If 16 students have not yet reached their...

by Jay@ManhattanReview » Wed Jul 22, 2020 12:32 am
AAPL wrote: ↑
Tue Jul 21, 2020 11:54 am
 Princeton Review

One-fifth of the students at a nursery school are 4 years old or older. If 16 students have not yet reached their third birthday and a total of 40 students are not between 3 years old and 4 years old, how many children are in the nursery school?

A. 120
B. 96
C. 70
D. 60
E. 24

OA A
Say

Totla # of students = t;
# of students under 3 years = x = 16;
# of students more than 4 years = z = t/5;

=> 16 + t/5 = 40

t = 120

Correct answer: A

Hope this helps!

-Jay
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