b) A train runs 240 miles at a speed of 60 m.p.h., another 480 miles at a speed of 80 m.p.h., then due to repairs of the track travels for 15 minutes at a speed of 10 m.p.h. and finally covers the remaining distance of 270 miles at a speed of 55 m.p.h. What is the average speed in miles per hour?

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter4: Polynomials
Section4.10: Problems Without Solutions
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b) A train runs 240 miles at a speed of 60 m.p.h., another 480 miles at a speed of 80
m.p.h., then due to repairs of the track travels for 15 minutes at a speed of 10 m.p.h. and
finally covers the remaining distance of 270 miles at a speed of 55 m.p.h. What is the
average speed in miles per hour?
Transcribed Image Text:b) A train runs 240 miles at a speed of 60 m.p.h., another 480 miles at a speed of 80 m.p.h., then due to repairs of the track travels for 15 minutes at a speed of 10 m.p.h. and finally covers the remaining distance of 270 miles at a speed of 55 m.p.h. What is the average speed in miles per hour?
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