Can someone plz help me solved this problem I need help plz help me! Will mark you as brainiest!

7 nickels, 12 dimes

Step-by-step explanation:

n+d= 19

5n+10d= 155 ⇒ n+2d= 31

comparing the 2 equations we get

d=12, then n= 7

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: