Question

a car takes 1 hour to travel 100 km along a main road and the half hour to travel 20 km along a side road what is its average speed​

Answer 1

80 km per hour i believe. i’ll admit i’m american so we don’t use km lol, but the math should be the same. total distance = 120km, and total time = 1.5 hours. 120/1.5 = 80.