A library contains only paperback and hardback books. If the ratio of paperback books to the total number of books is 3 to 5 which statement must be true A. The ratio of paperback books to hardback books is 2 to 3

B. The ratio of paperback books to hardback books is 3 to 2

C. There are exactly 2 paperback books in the library

D. There are exactly 8 hardback books in the library

40 minutes

step-by-step explanation:

add the time and multiply by 2

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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