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 option
A) 60  B) 70  C) 80  D) 90  E) 100
Solution:   80   Explanation:   21 B 7 80 9 D 10 A 13   = 21 / 7 + 9 X 10 - 13   = 3 + 90 - 13= 
<gadget id="calculator">3 + 90 - 13</gadget>
<output>80</output>
80   Answer 80
<result>C</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