Question

total distance covered by car is 80km,the time taken is 2 hours , Speed = ?​

Answer 1

Answer:

The speed of car is 80 km/h and after 2 h it covered one fourth of total distance.

Speed of car = 80 km/hr.

Therefore distance covered by the car in 2 hours = 2 hours × 80 km/hr = 160 km.

Let the total distance to be covered by car be x km.

But the car could cover only 1/4 of distance in 2 hours. The distance covered by car is 1/4 of x in 2 hours.

1/4 of x = 160 km.

1/4 × x = 160 km.

x/4 = 160 km.

Cross multiplication

x = 4 × 160 km

x = 640 km.

Hence total distance to be covered by car is 640 km.

Answer : total distance to be covered by car is 640 km.

Answer 2

$d = 80km \\ t = 2h \\ s = \frac{d}{t} \\ \\ = \frac{80km}{2h} \\ \\ = 40km \: per \: h$

your answer is 40km/h