A sold goods costing 40$ to B after getting 20% profit on sales and then B sold the same to C for loss of 20% on sales,calculate amount of loss to B.

@40$ cost A Sold to B @50$ (at20% profit on sales)

Now B’s cost =50$

@50$ cost B Sold to C @41.7  $ (i.e. @20% loss on Sales)

B’s loss =50$ -41.6$ =8.3 $ (aprx.to digits)

Cost to A =40$

Cost to B =40$ *1.2 =48$

Selling Price from B to C =48$ *0.8 =38.4$

Loss to B =48 -38.4 =9.6$