Question

Selling price of a toy car is rs 540; if the profit made by the shopkeeper is 20%. What is the is the cost price of this toy car?

Answer 1

so=540
%profit=20%
let cp be x
then , sp=cp+20%of cp
so, 540=x+0.2x=1.2x
so, x=540/1.2=450.
Hence ,cost price is rs 450.
Thanks.

Answer 2

cp =(540) - (540*20/100)
     =540-108
     =432rs