The ratio (3r - 2)/5 is equa to the ratio (5 + 2r)/8. What is the value of r?
Just equate the two expressions
(3r - 2)/5 = (5 + 2r)/8. Now cross multiply
8 ( 3r-2) = 5 ( 5+2r) <===== now just solv for 'r' ....you can do that yah?
+36916 
