At a certain diner, Joe ordered 3 doughnuts and a cup of coffee and was charged $ 2.25. Stella ordered 2 doughnuts and a cup of coffee and was charged $ 1.60. What is the price of 2 doughnuts? Options
A) $ 0.55
B) $ 1.00
C) $ 1.10
D) $ 1.30
E) $ 1.80
3$ 1.30 + C = 2.25......(1)   2$ 1.30 + C = 1.6........(2)   (1) - (2) --&gt; $ 1.30 = 0.65 --&gt; 2$ 1.30 = 1.3   Answer: $ 1.30
<result>D</result>
At a certain diner, Joe ordered 3 doughnuts and a cup of coffee and was charged $ 2.25. Stella ordered 2 doughnuts and a cup of coffee and was charged $ 1.60. What is the price of 2 doughnuts?