Question

selling price is 12 gain is 20% find cost price

Answer 1

$cp = \frac{(100 )}{(100 + p\%)} \times sp$
$cp = > \frac{100}{120} \times 12$
cp = 10

Cost price = Rs 10


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Answer 2

hello users ...
solution:-
e know that
C.P = 100 * S.P / (100 + gain%)

Here,
C.P = 100* 12 / (100 + 20 )

=> 1200 /120 = 10 Answer 

@ hope it helps ..