Convert Mixed Number Time: 1½ Hours to Minutes

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

• Step 1: Convert the mixed number $1\frac{1}{2}$ into a decimal notation.
• Step 2: Use the conversion formula to convert hours into minutes.
• Step 3: Calculate the total number of minutes.

Now, let's work through each step:
Step 1: The mixed number $1\frac{1}{2}$ can be converted to the decimal $1.5$ by recognizing that $\frac{1}{2} = 0.5$. Thus, we have $1.5$ hours.
Step 2: Next, we use the conversion formula: $\text{minutes} = \text{hours} \times 60$, where the number of hours is $1.5$.
Step 3: Plugging in the value, we calculate: $\text{minutes} = 1.5 \times 60 = 90$.

Therefore, the solution to the problem is $90$ minutes.