A person has to cover a distance of 6 km in 45 minutes. If he covers one-half of the distance in two-thirds ofthetotaltime, to cover the remaining distance in the remaining time,whatshouldbe his speed in km/hr?
14 km/hr
12 km/hr
10 km/hr
8 km/hr
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
Now he needs to cover the remaining 3 km in remaining 15 minutes
Distance =3 km
Time =15 minutes =1/4 hour
Required Speed =3/(1/4)=12 km/hr
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
Now he needs to cover the remaining 3 km in remaining 15 minutes
Distance =3 km
Time =15 minutes =1/4 hour
Required Speed =3/(1/4)=12 km/hr