Car "X' covers 385 km distance in 7 hours. and car 'Y' covers 715 km distance in 13 hours. What is the sum of speed of both cars?

Options

A. 105 km/hrs.
B. 103 km/hrs
C. 110 km/hrs.
D. 100 km/hrs

Answer

To find the sum of the speeds of car X and car Y, we can follow these steps:

### Step 1: Calculate the speed of Car X
The formula for speed is given by:
\[ \text{Speed} = \frac{\text{Distance}}{\text{Time}} \]
For Car X:
- Distance = 385 km
- Time = 7 hours

Using the formula:
\[ \text{Speed of Car X} = \frac{385 \text{ km}}{7 \text{ hours}} = 55 \text{ km/h} \]

### Step 2: Calculate the speed of Car Y
Using the same formula for Car Y:
- Distance = 715 km
- Time = 13 hours

Using the formula:
\[ \text{Speed of Car Y} = \frac{715 \text{ km}}{13 \text{ hours}} = 55 \text{ km/h} \]

### Step 3: Calculate the sum of the speeds of both cars
Now, we add the speeds of Car X and Car Y:
\[ \text{Sum of speeds} = \text{Speed of Car X} + \text{Speed of Car Y} = 55 \text{ km/h} + 55 \text{ km/h} = 110 \text{ km/h} \]

### Final Answer
The sum of the speeds of both cars is:
\[ \text{Sum of speeds} = 110 \text{ km/h} \]

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