Mathematics
NULL
Medium
Question
In a kilometre race, A beats B by 50 metres or 10 seconds. How long does A take to finish?
A
200 sec
B
190 sec
✓ Official correct answer
C
210 sec
D
150 sec
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
200 sec
No member explanations yet for this option.
B
190 sec
No member explanations yet for this option.
C
210 sec
No member explanations yet for this option.
D
150 sec
No member explanations yet for this option.
Explanation
B runs 50 m in 10 s, so B needs 200 s for 1000 m. A finishes 10 s earlier ⇒ 190 sec.