16
A truck covers a certain distance in 12 h at the speed of 70 km/h. What is the average speed of a car which travels a distance of 120 km more than the truck in the same time ?
- A76 km/h
- B85 km/h
- C82 km/h
- D78 km/h
Answer not set
Discussion 1
Log in or create a free account to reply and vote.
0
CCommunity
Solution
The distance travelled by the truck in 12 hours equals 12*70 = 840 km
Hence, the car travels 840 + 120 = 960 kms in 12 hours.
So, the average speed of the car equals $\frac{960}{12} = 80$ kmph
The distance travelled by the truck in 12 hours equals 12*70 = 840 km
Hence, the car travels 840 + 120 = 960 kms in 12 hours.
So, the average speed of the car equals $\frac{960}{12} = 80$ kmph