If 'A' means '-', 'B' means '/', 'C' means '+', and 'D' means 'X' then
Find the value of the following:
21 B 7 C 9 D 10 A 13	Choose the correct choice from the following answers.
A) 80 B) 75 C) 85 D) 95 E) 66
80   80   Explanation:   21 B 7 C 9 D 10 80 13   = 21 / 7 + 9 X 10 - 13   = 3 + 90 - 13= 
<gadget id="calculator">3 + 90 - 13</gadget>
<output>80</output>
80
<result>A</result>
If 'A' means '-', 'B' means '/', 'C' means '+', and 'D' means 'X' then
Find the value of the following:
21 B 7 C 9 D 10 A 13