Coding and Decoding Questions

If "A" denotes "added to", "B" denotes "divided by", "C" denotes "multiplied by" and "D" denotes "subtracted from", then 116 B 29 C 6 A 24 D 45 = ?

If A = 26 and X-RAY = 40, then WHAT = ?

In a certain code language, "DESIRE" is written as "EGVMWK". How is "RECESS" written in that code language?

If FLOTSAM is coded as UOLGHZN, then how will PIN be coded as?

If 37*14 = 17,
69*33 = 34,
91*125 = 72
then what should 28*56 = ?

If FRIEND is coded as HTKGPF then REVEAL will be coded as:

If BROTHER is coded as GWTYMJW, then SCHOOL is coded as

In a certain code language, "TREASON" is written as "RKWWINX" and "POULTRY" is written as "CNXHYKT". How is "NUMBER" written in that code language?