1. A stationer buys pens at 5 for 28 and sells them at a profit of 25%. How much should a customer pay; if he buys (i) only one pen ? (ii) three pens?
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We are given a cost price of 5 pens which is Rs 28, to simplify the sum, we will find the cost price of 1 pen by unitary method. As we are given the profit percentage which is 25%, we will convert it to profit to simplify calculation. Therefore, the selling price of 3 pens is Rs 21.
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Answer:
We are given a cost price of 5 pens which is Rs 28, to simplify the sum, we will find the cost price of 1 pen by unitary method. As we are given the profit percentage which is 25%, we will convert it to profit to simplify calculation.
Therefore, the selling price of 3 pens is Rs 21.
Step-by-step explanation:
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