RE: Puzzle Contest #12 - First to get all the correct answers wins 5 SBD, all attempts will receive an upvote.

[asifbiswas]

Ans: 1a =23 , 1b =7, 1c = 18
Ans: 2a = 24 , 2b = 54 , 2c = 9
Ans: 3 = John
Ans: 4a = -5, 4b = 4