85. A man travels first 900 Kms of his journey by train at an average speed of 80 Kmsper hour, next 2000 Kms. by plane at an average speed of 300 Kms. per hour and, finally, 20 Kms. bytaxi at an average speed of 30 Kms. per hour. What is his average speed for the entire journey ?

Answered: Image /qna-images/answer/9e8e5e28-3d0f-4426-9882-f77c689f6a3d.jpg

Answered: 85. A man travels first 900 Kms of his…

Elementary Algebra

17th Edition

ISBN:9780998625713

Author:Lynn Marecek, MaryAnne Anthony-Smith

Publisher:Lynn Marecek, MaryAnne Anthony-Smith

Chapter1: Foundations

Section1.10: Systems Of Measurement

Problem 911E: Some people think that 65°to75° Fahrenheit is the ideal temperature range. (a) What is your ideal...

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85. A man travels first 900 Kms of his journey by train at an average speed of 80 Kms , per hour, next 2000 Kms. by plane at an average speed of 300 Kms. per hour and, finally, 20 Kms. by taxi at an average speed of 30 Kms. per hour. What is his average speed for the entire journey ?