.
4r + 4*(r+4) = 224.
4r + 4r + 16 = 224,
8r = 224 - 16 = 208 ---> r = = 26.
Answer. Rate of one cyclist is 26 mph. Rate the other is 26 + 4 = 30 mph.
For objects traveling in opposite directions see the lesson
- Travel and Distance problems for two bodies moving in opposite directions
in this site.
For objects traveling in the same direction see the lesson
- Travel and Distance problems for two bodies moving in the same direction (catching up)
Also, you have this free of charge online textbook in ALGEBRA-I in this site
- ALGEBRA-I - YOUR ONLINE TEXTBOOK.
The referred lessons are the part of this textbook under the section "Word problems", the topic "Travel and Distance problems".