Simran has 80 cm of red ribbon and `2.20m ` of blue ribbon. Find the ratio of the length of the red ribbon to the length of the blue ribbon.

Answer

To find the ratio of the length of the red ribbon to the length of the blue ribbon, we will follow these steps:

### Step 1: Identify the lengths of the ribbons
- Length of red ribbon = 80 cm
- Length of blue ribbon = 2.20 m

### Step 2: Convert the length of the blue ribbon to the same unit as the red ribbon
- Since the red ribbon is in centimeters, we need to convert the blue ribbon from meters to centimeters.
- We know that 1 meter = 100 centimeters.
- Therefore, 2.20 meters = 2.20 × 100 cm = 220 cm.

### Step 3: Write the ratio of the lengths
- Now that both ribbons are in the same unit (centimeters), we can write the ratio of the lengths.
- The ratio of the red ribbon to the blue ribbon is 80 cm : 220 cm.

### Step 4: Simplify the ratio
- To simplify the ratio, we can divide both terms by their greatest common divisor (GCD).
- The GCD of 80 and 220 is 20.
- Dividing both terms by 20:
- 80 ÷ 20 = 4
- 220 ÷ 20 = 11
- Therefore, the simplified ratio is 4 : 11.

### Final Answer
The ratio of the length of the red ribbon to the length of the blue ribbon is **4 : 11**.

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