At what speed should a car travel on a highway to reach a destination 12 km awayin 15 minutes? 

Correct option is C

To find the required speed, we use the formula:

$$\text{Speed} = \frac{\text{Distance}}{\text{Time}}$$​​

Given:

• Distance = 12 km
• Time = 15 minutes = 15/60 hours = 1/4 hours

$$\text{Speed} = \frac{12}{1/4} = 12 \times 4 = 48 \text{ kmph}$$​​

Thus, the correct answer is (C) 48 kmph.