John has a bag filled with marbles. there are 35 red marbles, 14 blue marbles, and 49 green marbles. what is the ratio of red marbles to green marbles in john's bag of marbles?

- 2/5
- 7/5
- 5/7
- 7/2

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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