A school choir has 80 students; 36 of them are in seventh grade. Also, 40 students in the choir are girls; 18 of them are in sev

Question

4 years ago

5

A school choir has 80 students; 36 of them are in seventh grade. Also, 40 students in the choir are girls; 18 of them are in sev

enth grade. What is the probability that a student picked at random from the choir is either a girl or is in seventh grade?

Mathematics

2 answers:

Rama09 [41] · Answer 1 · 2021-12-16T20:42:17+03:00

Rama09 [41]4 years ago

6 0

Answer:

29/40

Step-by-step explanation:

Anuta_ua [19.1K] · Answer 2 · 2021-12-16T19:38:25+03:00

Anuta_ua [19.1K]4 years ago

3 0

Probability is favorable outcome to total possibilities.

So, any probability will be x/80

There are 36 seventh graders, and 22 girls in eighth grade (40-18=22). 36+22=58

The probability of drawing either a seventh grader or a girl is 58/80, or 72.5%