if 14W=5R, what does 16W equal?

Use ratio/proportion.

(14W/5R) = (16W/?R) and solve
?R = 5R*16W/14W = 5.71R

OR
14W = 5R; therefore,
W = 5R/14W, then
16W will be 16W*5R/14W
16W = 5.71R