Solve: (4/5 × 1/2) + 3/10 | Mixed Fraction Operations

To solve this problem, we'll follow these steps:

• Step 1: Multiply the first two fractions.
• Step 2: Add the result to the third fraction.
• Step 3: Simplify the final result.

Now, let's work through each step:
Step 1: Multiply $\frac{4}{5}$ by $\frac{1}{2}$. According to the multiplication rule for fractions, we have:
$\frac{4}{5} \times \frac{1}{2} = \frac{4 \times 1}{5 \times 2} = \frac{4}{10}$ Step 2: We need to add $\frac{4}{10}$ to $\frac{3}{10}$. Since these fractions have the same denominator, we can add them directly:
$\frac{4}{10} + \frac{3}{10} = \frac{4 + 3}{10} = \frac{7}{10}$ Step 3: The sum $\frac{7}{10}$ is already in simplest form.

Therefore, the solution to the problem is $\frac{7}{10}$, which matches choice $\text{(3)}$.