Puzzle 122 - solution

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 Answer is 35

Let us use first letters of their names as number of drones shot by each pilot.

I = 10+J ------(1)
L = I - 4 ------(2)    => L = 6+J
J + V = 9 ------(3)
L = 3+V------(4).   =>6+J =3+V => V - J = 3
V  =  C + 2 ------(5) 

 

V+J = 9
V-J = 3 
Adding these two, we get 2V = 12  
=> V = 6.  and J = 3
 
L = 6+J = 9
I = 10+J = 13
C = V - 2 = 4

Total number drones shot down is sum of all these= I+J+L+V+C = 13+3+9+6+4=35 

 

 

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