In a fifth grade class, 4/5 of the girls have brown hair. Of the brown haired girls, 3/4 of them have long hair. Of the girls with long brown hair, 1/3 of them have green eyes.

Part A
What Fraction of the girls in the class have long brown hair?

Part B
What fraction of the girls in the class have long brown hair and green eyes? Explain How you found your answer.