Evaluating the Expression: Step-by-Step Guide for 18-Year-Olds

To evaluate the expression 3/5 + 1/5 ÷ 1/2, we will follow these steps:

1. First, we need to handle the division part of the expression, which is 1/5 ÷ 1/2.
2. This division of fractions can be done by multiplying the first fraction by the reciprocal of the second fraction. So, 1/5 ÷ 1/2 becomes 1/5 × 2/1.
3. Now we multiply: (1 × 2) / (5 × 1) = 2/5.
4. Next, we substitute this result back into the original expression: 3/5 + 2/5.
5. Because the denominators are the same (both are 5), we can add the numerators: (3 + 2) / 5 = 5/5.
6. 5/5 simplifies to 1, which is a whole number.

Thus, the final answer is 1.