Question 834732
Let x = number of additional free throws needed (without a miss)


(7+x)/(15+x) = 75/100


(7+x)*100 = (15+x)*75


100(7+x) = 75(15+x)


700+100x = 1125+75x


100x-75x = 1125-700


25x = 425


x = 425/25


x = 17


So you need to make <font color="red">17</font> free throws in a row to get 75%