31/5 x 7 1/4 in simplest form a.22 b.10 1/9 c.21 1/20 d.23 1/5

We have

(16/5)x(29/4) = (16x29)/(5x4) = 464/20 = 116/5 = 23 1/5;

The correct answer is d. 23 1/5;

Step-by-step explanation:

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: