Will mark Brainlest Help please If a :b and 4:5 then find the duplicate ratio of a:b
step by step​

the duplicate ratio of a : b

= a²/b²

Step-by-step explanation:

for example:-

for understanding

if u wanna find the duplicate ratio of 4:5

so,

4²/5²= 16/25

•°• 16:25

16:25 is your duplicate ratio of 4:5

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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