question_answer

A shopkeeper professes to sell the goods at cost price but he uses a weight of 900 grams for a kilogram. Then his gain percent is            

A) \[\frac{100}{9}%\]             

B)         \[\frac{100}{8}%\]

C)  \[\frac{100}{7}%\]         

D)         \[\frac{100}{6}%\]