A. Only I is necessary
B. Only II is necessary
C. Both I and II are necessary.
D. Either I or II is necessary.
E. None of these
A shopkeeper purchased 150 identical pieces of calculators at the rate of Rs. 250 each. He spent an amount of Rs .2500 on transport and packing. He fixed the labeled price of each calculator at Rs. 320. However, he decided to give a discount of 5% on the labeled price. What is the percentage profit earned by him?