Adiver needs to descend to a depth of 100 feet. she wants to do it in 5 equal descendants. how far should she travel in each descent?

divide total distance by the number od descents they want to do it in

100 / 5 = 20

 so each one should be 20 feet

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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