At a​ school, 102 students play at least one sport. This is 40​% of the students at the school. How many students are at the​ school?

Question

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Answer 1

1. Compute C(1000,2) (a) 499500. (b) 1000000. (c) 2. (d) 999000. (e) None of the above. 2. Suppose that 80% of students taking calculus have previously had a trigonometry course. Of those that did, 75% pass their calculus class. Of those that did not, 30% pass calculus. What is the overall failure rate for calculus? (a) 52% (b) 34% (c) 59% (d) 41% (e) 27%

Answer 2

102/(number of students)=40/100. Number of students=102*100/40=102*5/2=51*5=255.