A person has to cover a distance of 6 km in 45 minutes.
A person has to cover a distance of 6 km in 45 minutes. If he covers one-half of the distance in two-thirds of the total time; to cover the remaining distance in the remaining time, what should be his speed in km/hr?
Answer/Solution
12 km/hr
Steps/Work
Explanation:
The person needs to cover 6 km in 45 minutes
Given that he covers one-half of the distance in two-thirds of the total time
=> He covers half of 6 km in two-thirds of 45 minutes
=> He covers 3 km in 30 minutes
Hence, now heneed to cover the remaining 3 km in the remaining 15 minutes
Distance = 3 km
Time = 15 minutes = 1/4 hour
Required Speed=Distance/Time = 3/(1/4) = 12 km/hr
Answer: Option A
The person needs to cover 6 km in 45 minutes
Given that he covers one-half of the distance in two-thirds of the total time
=> He covers half of 6 km in two-thirds of 45 minutes
=> He covers 3 km in 30 minutes
Hence, now heneed to cover the remaining 3 km in the remaining 15 minutes
Distance = 3 km
Time = 15 minutes = 1/4 hour
Required Speed=Distance/Time = 3/(1/4) = 12 km/hr
Answer: Option A