If r,s, and t are the areas of the square regions shown above, what is the value of \frac{r}{r+s+t}?
a) 49/1010
b) 7/17
c) 1/8
d) 1/16
e) 1/21![]()
a) 49/1010
b) 7/17
c) 1/8
d) 1/16
e) 1/21