A shopkeeper sold an article at $100 with 10% profit. Then find its cost price?	Pick one
A) $120  B) $100  C) $91  D) $72  E) $69
cost price = selling price *100/(100+profit)   C.P. = 100*100/110 = $91(approximately)   Answer is $91
<result>C</result>
A shopkeeper sold an article at $100 with 10% profit. Then find its cost price?