A shopkeeper sold an article at $1800 with 20% profit. Then find its cost price?	Choose the correct choice from the following:
A) $1000 B) $1500 C) $1850 D) $1600 E) $2000
cost price = selling price *100/(100+profit)   C.P. = 1800*100/120= 
<gadget id="calculator">1800*100/120</gadget>
<output>1_500</output>
$1500   Answer is $1500
<result>B</result>
A shopkeeper sold an article at $1800 with 20% profit. Then find its cost price?