Respuesta :
to make 70% she has completed 7 out of 10 shots. for her to get 75% she would need 3 out of 4 each time.
Let's see, if she has made 65% of n throws so far, then she needs to throw x more in a row to get 68%.
so you would do:
.65n+x=.68(n+x)
.03n=.32x
x=3/32 n
so you would do:
.65n+x=.68(n+x)
.03n=.32x
x=3/32 n