If the lines are drawn in proportion to the charge, what is the ratio q1q2?
1/3
since, the relative number of EFL originating from or terminating on a charge is proportional to the magnitude of the charge. This ratio of their charges q1q2 must be equal to the ratio of number of electric field lines emanating from q1 and q2.
By carefully while observing the picture,q1q2=616=38