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scoundrel [369]
4 years ago
15

40)

Mathematics
1 answer:
mart [117]4 years ago
8 0

Answer:

0.52

Step-by-step explanation:

70% of the students  chose to play on the play ground are boys.

60% of them are boys. So , logically 40% are girls.

40% of 60% is : \frac{7}{10} * \frac{4}{10} = \frac{28}{100}

30% of the students stayed inside,

80% of them are girls .

80% of 30% is : \frac{8}{10} * \frac{3}{10} = \frac{24}{100}

So 28%+ 24% = 52 %

There is a 0.52 probability that the student is a girl

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