A flight covers 1,200 km in 2 hours. By what percent should its speed be decreased to cover the same distance in 3 hours?
Show answer & explanation
Correct answer: C
Explanation
Distance = 1200 km
Time₁ = 2 hours
Time₂ = 3 hours
Initial Speed = 1200 / 2 = 600 km/h
New Speed = 1200 / 3 = 400 km/h
Reduction in Speed = 600 − 400 = 200
Percentage Reduction = (200 / 600) × 100 = 33.33%