A car cover a distance of 357 km on 42 litres petrol .How far can it travel on 12 litres of petrol ?

Answer

To solve the problem of how far a car can travel on 12 liters of petrol, we can use the unitary method. Here’s a step-by-step solution:

### Step 1: Determine the distance covered per liter of petrol
The car covers a distance of 357 km using 42 liters of petrol. To find out how far the car travels on 1 liter of petrol, we divide the total distance by the total liters of petrol.

\[ \text{Distance per liter} = \frac{357 \text{ km}}{42 \text{ liters}} \]

### Step 2: Perform the calculation
Now, we perform the division:

\[ \text{Distance per liter} = \frac{357}{42} = 8.5 \text{ km/liter} \]

### Step 3: Calculate the distance for 12 liters of petrol
Now that we know the distance the car travels on 1 liter, we can find out how far it can travel on 12 liters by multiplying the distance per liter by the number of liters.

\[ \text{Distance for 12 liters} = 8.5 \text{ km/liter} \times 12 \text{ liters} \]

### Step 4: Perform the multiplication
Now, we calculate the distance:

\[ \text{Distance for 12 liters} = 8.5 \times 12 = 102 \text{ km} \]

### Final Answer
Thus, the car can travel **102 km** on 12 liters of petrol.

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