Coding and Decoding Questions

If "+" means "minus", "x" means "divided by", "÷" means "plus" and "-" means "multiplied by", then
300 x 10 – 5 + 36 ÷ 57 = ?

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

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 SYSTEM is written as RXRSDL.
How can CORRECT be written in that code?

If BUDDHISM is coded as DWFFJKUO then CHRISTIAN will be 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?

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

In a certain code language, “TRAP” is written as “53” and “MADE” is written as “21”. How is “LATE” written in that code language?