Question

A person purchased 10 dozen pens at the rate of 40 per dozen. On checking, he found that 20 pens were not working. In order to earn
$25\%$,at what price should he sell each pen

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Answer 1

Answer:

10 dozen = 12×10 = 120

rate = 40 per dozen, 40 for 12

no of working pens = 100

no of not working pens = 20

this cost = 40 × 10 = 400

25% of 400 = 100

therefore, he should earn 400+ 25%= 400+100 = 500

Step-by-step explanation:

So, he should sell 100 pens for 500 Rs

rate/cost of a pen = 500/100= ₹5