Question

By travelling at a speed of $48km/h$, a car can finish a certain journey in $10$ hours. To cover the same distance in $8$ hours, the speed of the car should be

• A. 30 km/h
• B. 40 km/h
• C. 60 km/h
• D. 80 km/h

Answer 1

Answer: (C)

Speed of the car $=48km/h$
and time taken by car $=10$ hours
$\text{Distance}=\text{Speed}\times \text{Time}$

$\Rightarrow \text{Distance}=48km/h\times 10h=480km$
If car need to cover $480km$ in $8$ hours,

So, required speed $=\frac{480km}{8h}=60km/h$
Hence, option 'D' is correct.