A train is travelling at the speed of 36 km/hr. How much time will the train take to cover a distance of $$\frac7{10}$$​ of a kilometer?

Correct option is D

Given:

Speed of the train = 36 km/hr
Distance to be covered = $$\frac{7}{10}$$​ km

Concept Used:
Time taken to cover a distance is given by the formula:

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

Solution:
Converting speed to meters per second:

​$$36 \times \frac{5}{18} = 10 \text{ m/s}$$​

Distance in meters:

​$$\frac{7}{10} \times 1000 = 700 \text{ m}$$​

​$$\frac{700}{10} = 70 \text{ seconds}$$​