.
r is the rate of the slower plane (in km/h);
(3r-5) is the rate of the faster plane.
The total distance equation is
1.5r + 1.5*(3r-5) = 748.5 kilometers.
You do the rest.
You may report me about your progress.
If you have questions, let me know.
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For simple Travel & Distance problems, see introductory lessons
- Travel and Distance problems
- Travel and Distance problems for two bodies moving in opposite directions
- Travel and Distance problems for two bodies moving in the same direction (catching up)
in this site.
They are written specially for you.
You will find the solutions of many similar problems there.
Read them and learn once and for all from these lessons on how to solve simple Travel and Distance problems.
Become an expert in this area.