In an examination, Dada scored x% in Maths, 50% in Science and 70% in English Studies. If his mean score for the three subjects was 55%, find x.

45% she scored in maths

Step-by-step explanation:

To find the mean of any set of numbers you have to add the the numbers and divide by how many numbers. So if your mean for the three subjects is 55% then we can form the equation (x+50+70) / 3 = 55. All you have to do here is simply solve: x+50+70 = 165, and then x = 165-120 = 45 %

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:

im not sure

step-by-step explanation: