Question

if sp is 729 and loss is 10% than cp?

Answer 1

Given.
Sp = 729 ₹
Loss = 10%
C.p =  [100 / (100 – Loss%)] * SP
[100/100-10%]*729
[100/90]*729
72900/90 = 810 ₹
:• C.p = 810 ₹

Answer 2

cp =(100)÷(100-loss%)×sp;
$= 100 \div 100 - 10 \times 729$
$= 1.11 \times 729$
$= 809.19$