If you have car A and car B, 6 y$ m# M% r" F' g* k
! Q- V( _! X: } p2 c, gTotal Iusurance cost = Ins (for car A only) + Ins (for car B only) - Discount. & Y# y v* _, S, e! c! d g( i4 M; i. k# w$ y' yUsually the discount is about 20% of Ins(for car B only) of a couplr hundred $ 3 G# u6 _% C4 b$ H$ ^9 Q8 jThis is just from my memory. You can phone Ins company for details.