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Maths-

SAT

Easy

Question

The table above shows the distribution of the number of extracurricular activities that students at a middle school participate in. If the number of students who participate in two extracurricular activities is 120 more than the number of students who participate in one extracurricular activity, what is the total number of students who attend the middle school?

240
480
600
900

The correct answer is: 480

The difference of number of students participating two extra curricular activities & one extra curricular activities is 120.
(55 – 30)%       = 120
25%                 = 120
100%               =?
25% x = 100% 120
$fraction numerator 25 x over denominator 100 end fraction equals 100 over 100 120$ .
x = 480.

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