Mathematics, 16.10.2019 23:40, calvinsanchez8429

120 students have maths or science next lesson. there are 12 more boys than girls altogether. the ratio maths: science =2: 3 half as many girls have maths as have science. a student is chosen at random. what is the probability that it is a boy who has maths?

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120 students have maths or science next lesson. there are 12 more boys than girls altogether. the ra...