Question 923113

A driver drove at 80 kph for 20 minutes of a one -hour trip.  His average speed for the whole trip is 75 kph. What was his average speed for the other 40 minutes of the trip
<pre>
Speed on 2nd leg of trip: {{{highlight_green(72.5)}}} km/h
You can do the check!! 
===================
If you need a complete and detailed solution, let me know!!

Send comments, “thank-yous,” and inquiries to “D” at MathMadEzy@aol.com.
Further help is available, online or in-person, for a fee, obviously. 

For FREE info and answers to questions about the ASVAB exam, the NYS 3 – 8 city/state wide exams,GENERAL
MATH and HOMEWORK QUESTIONS, or MATH QUESTIONS related to the Regents Integrated Algebra, 
Regents Geometry, Regents Algebra 2/Trigonometry, SHSAT, COOP/HSPT/TACHS, PSAT, SAT, ACT, SSAT/ISEE,
GRE, CLEP, and the TASC/GED, you can visit: http://asvabstudyzone.freeforums.net/.