A shopkeeper buys mangoes at the rate of 6 a rupee and sells them at 3 a rupee. Find his net profit or loss percent?  Choose the correct choice from the following choices:	A) 33 4 / 3 %	B) 33 1 / 7 %	C) 50 %	D) 32 1 / 3 %	E) 60 %

Rationale: the total number of mangoes bought by the shopkeeper be 18 . if he buys 6 a rupee , his cp = 3 he selling at 3 a rupee , his sp = 6 profit = sp - cp = 6 - 3 = 3 profit percent = 3 / 6 * 100 = 50 % answer : c
Answer: C