Two cars start towards each other from points 200 miles apart. One car travels at 40 miles per hours and the other travel at 35 miles an hour. How far apart will the two cars be after four hours of continuous travelling? (a) 20 (b) 40 (c) 75 (d) 100
Solution: After four hours, one car travels 40 x 4 = 160 km, and the other car travels 35 x 4 = 140 km. Therefore, the two cars are 160 + 140 - 200 = 100 km apart
