Answer:
4000 rs
Step-by-step explanation:
we know the formula to find cp ,
cp = [100/(100+p%)]*sp
so,
cp = [100/(100+10)]*44000
=> [100/110]*44000
=> [10/11]*44000
=> 440000/11
=> 40000
so, the cost price is 40,000
for the money she spent on extra fittings,
40000-36000
= 4000
she spent 4000rs on extra fittings