Three water pumps can move a total 1700 gallons of water per minute from a flooded mineshaft. If engineers wnat to remove at least 5500 gallons per minute, how many pumps will they need to be operating? The answer choices are:
9.7 water pumps
9 water pumps
10 water pumps
93 water pumps

A 9.7

Step-by-step explanation:

I used a caculator

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:

bull

step-by-step explanation: