Question

A person has to cover a distance of 150 km in 15 hours. If he traveled with the speed of 11.8 km/hr for 10 hours. At what speed he has to travel to cover the remaining distance in the remaining time?

• A. 6 km/hr
• B. 8 km/hr
• C. 6.5 km/hr
• D. 6.4 km/hr

Answer 1

Answer:

D. 6.4 km/hr

Solution: Given: Total distance = 150 km Total time is taken = 15 hours Formula used: Speed = Distance/Time Calculation: For starting 10 hours travelled with 11.8 km/hr. Distance = Speed × Time ⇒ 11.8 × 10 ⇒ 118 km Remaining distance ⇒ 150 – 118 = 32 km Remaining Time ⇒ 15 – 10 = 5 hours Speed to travel 32 km in 5 hours ⇒ 32/5 ⇒ 6.4 km/hr ∴ Speed to travel remaining distance is 6.4 km/hr.