30 % students class 1-A have brown hair. 60% of brown-haired students in class 1-A have brown eyes. What percentage of students in class 1-A have brown hair and brown eyes?

Let’s break this down step by step:

### Step 1: Percentage of students with brown hair
30% of the students in class 1-A have brown hair.

### Step 2: Percentage of brown-haired students with brown eyes
60% of the students who have brown hair also have brown eyes.

### Step 3: Finding the percentage of students with both brown hair and brown eyes
To find the percentage of students in class 1-A who have both brown hair and brown eyes, we multiply the percentage of students with brown hair by the percentage of those with brown eyes:

\[
\text{Percentage of students with brown hair and brown eyes} = 30\% \times 60\%
\]

Convert percentages to decimals:
\[
0.30 \times 0.60 = 0.18
\]

Convert back to percentage:
\[
0.18 = 18\%
\]

### Final Answer:
18% of the students in class 1-A have both brown hair and brown eyes.

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Do you want more details or have any questions?

Here are 5 related questions to expand on this concept:
1. If there are 50 students in class 1-A, how many students have brown hair and brown eyes?
2. What is the probability that a randomly selected student from class 1-A has brown hair but not brown eyes?
3. If 40% of the class has black hair, what is the percentage of students with black hair and brown eyes?
4. How would the answer change if 70% of brown-haired students had brown eyes instead of 60%?
5. If 20% of the students have blue eyes, how many students have neither brown eyes nor brown hair?

**Tip:** When solving percentage problems involving groups, always break down the problem into smaller, manageable steps and use percentages as decimals when calculating.

30% of students in class 1-A have brown hair. 60% of brown-haired students in class 1-A have brown eyes. What percentage of students in class 1-A have brown hair and brown eyes?

Solve the problem where 30% of students in class 1-A have brown hair and 60% of those have brown eyes. Learn how to find the percentage of students with both brown hair and brown eyes using percentage multiplication. This problem is suitable for students in Grades 5-7.

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