SOLUTION: let the cost of the first table =x
let the cost of second table =x
so ,x+x=990 rs
=> 2x=990
= x = 990/2
=x =495
cost of each table =rs495
actuly the seller did"nt make any profit or loss beacuse
he gained 10% from the first table
and he loss 10%from from the second
thx
for makeing
me revise