In a journey of 24 miles, two thirds of the distance was travelled with a speed of 40 mph and the remaining with 60 mph. How much time did the journey take?
Q1. In a journey of 24 miles, two thirds of the distance was travelled with a speed of 40 mph and the remaining with 60 mph. How much time did the journey take?
Answer: 32 minutes
Explanation: First 16 miles at 40 mph takes 0.4 hr and last 8 miles at 60 mph takes 0.133 hr; total = 0.533 hr = 32 minutes.