At an amusement park, tom bought a number of red tokens and green tokens. Each red token costs $0.05, and each green token costs $0.14. If Tom spent a total of exactly $2.06, how many token in total did Tom buy?
Choose the correct choice from the following choices:
A) 216
B) 27
C) 28
D) 34
E) 20
Given:   0.05R + 0.14G = 2.06;   5R + 14G = 206.   Now, it's special type of equations as G and R must be a non-negative integers, so there might be only one solution to it. After some trial and error you'll get (actually there are several ways of doing it):   R = 30 and G = 4;   R + G = 34.   Answer: 34.
<result>D</result>
At an amusement park, tom bought a number of red tokens and green tokens. Each red token costs $0.05, and each green token costs $0.14. If Tom spent a total of exactly $2.06, how many token in total did Tom buy?