A person has to travel a distance of 30 km. He finds that he has covered $\frac{5}{6}$ of the distance in 3 hours and 20 minutes. what is his speed in km/h?
Answer & explanation
Correct answer: option 4
According to question ,
3 hr 20 min = 3 + \(\frac{20}{60}\) = 3 + \(\frac{1}{3}\) = \(\frac{10}{3}\)
Total distance = 30 km
\(\frac{5}{6}\)th of the distance = 30 × \(\frac{5}{6}\) = 25 km
Speed of the person = \(\frac{25 × 3}{10}\) = 7.5 km/hr
So , Speed is 7.5 km/hr