Mathematics
Medium
Question
Walking at 80% of his usual speed, a man is 10 mins late to his office. Find the usual time taken by hime to reach his office.
A
20 minutes
B
30 minutes
C
40 minutes
✓ Official correct answer
D
50 minutes
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
20 minutes
No member explanations yet for this option.
B
30 minutes
No member explanations yet for this option.
C
40 minutes
No member explanations yet for this option.
D
50 minutes
No member explanations yet for this option.