In a 400-meter race, A finishes in 45 seconds and B finishes in 50 seconds. By what distance does A beat B?
A. 48 meters
B. 36 meters
C. 40 meters
D. 44 meters
Answer: Option C
Solution (By JKSSB Mock Tests)
Speed of B = 400 / 50 = 8 m/s. Distance covered by B when A crosses the finish line at 45 seconds = 8 * 45 = 360 meters. Winning margin = 400 - 360 = 40 meters.
A person walks from his house to his office at a speed of 4 km/h and reaches 10 minutes late. If he walks at 5 km/h, he reaches 5 minutes early. Find the distance between his house and office.
No comments yet. Be the first to start the discussion!