In a certain code language, N is coded as 30 and COT is coded as 78. How will PET be coded as in that language ?

84

1   2    3    4   5    6   7     8    9  10  11  12  13

 A   B   C    D   E    F   G    H    I    J    K    L   M

 ↓    ↓    ↓    ↓    ↓     ↓   ↓    ↓     ↓   ↓    ↓    ↓    ↓

 Z   Y    X   W   V    U   T    S    R   Q   P    O   N

26  25  24  23  22  21  20  19  18  17  16  15  14

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THE LOGIC FOLLOWED HERE IS:

N is coded as 30 and COT is coded as 78.

LETTER                         N

PLACE VALUE           14 ×  2 +2 = 30

LETTER                       COT

PLACE VALUE            ( 3+ 15 + 20) × 2 + 2 = 78

SIMILARLY

LETTER                      PET

PLACE VALUE           ( 16 + 5 + 20 ) × 2 + 2 = 84

HENCE 84 IS CORRECT ANSWER