Answer:
:

Let the number of bugs in Edusoft, Elevate and Financo solution alone be a, b and c respectively. Number of bugs in all the solution = x and number of bugs in Edusoft and Elevate solutions alone be d, Elevate and Financo solutions alone be g and Number of bugs in Edusoft and Financo solutions alone e.
Acc to passage,
C = 2x............eq(i)
a=3x -4...........eq(ii)
b=4+x....................eq(iii)
It is given that Total number of bugs in Edusoft solution is 24,
Hence,
3x -4+x+d+e = 24.......eq(iv)
4x +d+e=28
d:e:f=1:2:3 (in some order)
From last time of the passage
$\Rightarrow$ 3x - 4 =14
$\Rightarrow$ x =6This implies d + e = 4, d =1 or 3 or e =1 or 3

Total number of bugs = 14+12+10+6+2+(d+e)
= 48