A survey found that 9 out of 10 people prefer to drink water while they exercise. If 828 people responded that they drink water while
they exercise, how many people were surveyed?
Which proportion could be used to solve this problem?

Answer is in the photo. I can only upload it to a file hosting service. link below!

tinyurl.com/wpazsebu

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

happy to

pls mark as brainliest