Lorrie is good at shooting at a target with a bow and arrow. The target she uses looks like this: She hits the center circle 6 out of 10 times and the 5-point ring 90% of the rest of the time. She almost never misses the target completely.

Assuming that her accuracy remains the same, if Lorrie wants to shoot until she has a total of 100 points, what is most likely the minimum number of shots she must take?