The distance between Party A and Party B is 60km. A car passes one third of the whole journey at an average speed of 40kmh, and the remaining two thirds of the journey takes 2.5h What's the average speed of the car in the second third of the distance? 2. The average speed of the car in the whole journey?

（1） 60× 2/3 ÷ 2.5
=40 ÷ 2.5
=16（km/h）
（2）60÷（60× 1/3 ÷40+2.5）
=60÷（20÷40+2.5）
=60÷（0.5+2.5）
=60÷3
=20km/h
A: the average speed of the car in the second third of the distance is 16km / h, and the average speed of the car in the whole distance is 20km / h
I hope my answer will help you

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