Answer:
x = 5km/h
Step-by-step explanation:
If he walks 5km/h, he would reach 30km in 6hrs. However, if he walks 1km/hr faster which is 6km/h, he wouls reach 30km in 5hrs. This meaning he can complete the same distance 1 hour faster. Hope this helps you. Follow me for faster replies. And smash that Thank you button.❤