Question

Joy bought pens at 120 a dozen. He sold it for 15 each. What is his profit per
cent?
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Answer 1

Answer:

50%

Step-by-step explanation:

Cost of 12 pens is 120/-

so, cost of 1 pen is 120/12 = 10/-

his profit is of 15-10 = 5/-

Now, in percentage,

5/10×100=50%