Walking at a speed of 5.4 km/h, Rohit takes 40 minutes to reach his school from his home. What time will he take if he walks 8 km/h?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e 27 minutes.
Speed = 5.4 km/h and Time = 40 minutes = 40 ÷ 60 = 2/3 hours
Distance = Speed × Time = 5.4 × (2/3) = 3.6 km
New Speed = 8 km/h and Distance = 3.6 km
Time = Distance ÷ Speed = 3.6 ÷ 8 = 0.45 hours or 0.45 × 60 = 27 minutes