To calculate the total points earned by Charles de Vendeville, we can use the scoring rules given:
- For each second spent underwater, the swimmer earns 2 points.
- For each meter traveled, the swimmer earns 1 point.
Let's calculate the points for Charles de Vendeville:
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He stayed underwater for 68.4 seconds, so the points earned for time are: \[ \text{Points from time} = 2 \times 68.4 = 136.8 \text{ points} \]
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He traveled 60.2 meters, so the points earned for distance are: \[ \text{Points from distance} = 1 \times 60.2 = 60.2 \text{ points} \]
Now, we will add these two amounts together to find the total score: \[ \text{Total points} = 136.8 + 60.2 = 197.0 \text{ points} \]
Thus, Charles de Vendeville earned 197.0 points to place first.