Please help with number 7 and 15

#7 is approximately 33 and #15 is correct.

Step-by-step explanation:

25 ÷ 75 = 0.333333333333333333333333

25 ÷ 0.33

= 75.75 which does approximate to 76 but it is still 75.

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: