A man crosses a 375 m road in 75 sec . His speed (in km/h) is:

Correct option is B

Given: 

Distance = 375m

Time = 75 sec 

Formula Used:  

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

m/sec = $$\frac{18}{5}$$ km/h​

Solution: 

Speed = $$\frac{375}{75} \times \frac{18}{5} = 18 \ km/h$$​​