In a school, 50% of students are younger of students younger than 10, 1/2 are 10 years old and 1/10 are older than 10 but younger than 12, the remaining of students are 12 years or older. How many students are 10 years old?

answer: f = 32.2m

step-by-step explanation: that is the answer

amount of oatypop that contains the prize = 40%

amount   of oatypop which doesn't contain the prize = (100-40)=60%

probability that hannah will win a prize

    = s +f s +f f s+ff   f s+ff f f s+ infinity.where f= failure,s= success

=   or 60%

probability that hannah only has to buy 3 or less boxes before getting a prize= (s) and ( f s) and (ff s) and (f f f s)

        = = 87.04 %  

step-by-step explanation:

75%

step-by-step explanation: