Question

In the fifth grade class, 4/5 of the girls have brown hair. Of the brown-haired girls, 3/4 of 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

Answer 1

As a tip, remember that whenever a problem says "of," multiply. So if you want to find brown hair and long hair, multiply, 4/5*3/4.
4/5*3/4=12/20=3/5
Part A: 3/5 of the girls in the fifth grade class have long brown hair.

If they have long brown hair and green eyes, multiply 3/5*1/3. Since it is all three, get the answer from above and multiply it by 1/3.
3/5*1/3=3/15=1/5
Part B: 1/4 of the girls in the fifth grade class have long brown hair and green eyes.

Hope this helps! If you have any questions, just ask!