Can someone to solve this question

answer:

i'm not that good but my try is;

step-by-step explanation:

x * 70% =   156

x * 70/100 = 156

70x = 15600

x = 15600/70

= 222.857

= 223

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:

-2 is the right