Andrew starts moving from A to B, a distance of 200 km, at a speed of 40 km/hr. At the same time, Bob starts moving from B at a speed of 20 Km/hr along a road which is perpendicular to AB. In how many hours the distance between Andrew and Bob will be the least?
A. 1.5 hr
B. 2 hr
C. 3 hr
D. 4 hr
E. 5 hr
Are You Up For the Challenge: 700 Level Questions![]()
A. 1.5 hr
B. 2 hr
C. 3 hr
D. 4 hr
E. 5 hr
Are You Up For the Challenge: 700 Level Questions