Answer:
9 hours
Explanation:
If a car takes 100km/h then for every hour, it drives 100km.
so 100km=1 hour
The question asks how long it would take for the car to cover 900km;
t= time
h=hours
km=kilometres
100 goes into 900, 9 times so times the period it took for the car to travel 100km by 9.
